Workers at a home for the elderly were among those celebrating on Thursday in Madrid after all the tickets with the top prize-winning number in Spain's $2.4 billion Christmas lottery were sold in one city neighborhood.

The number 66513 appeared on 1,650 tickets in the lottery known as El Gordo ("The Fat One"), with each ticket holder winning $418,000.

The winning tickets are normally sold in several different lottery outlets around the country but this time they were all sold from one outlet in the modest Acacias neighborhood of the Spanish capital.

People could be seen celebrating in nearby shops and bars and Spanish television broadcast images of people dancing and singing in the streets after winning some of the lottery's lesser prizes.

Other lotteries have larger individual top prizes but El Gordo, which dates from 1812, is ranked as the world's richest for the total prize money up for grabs.

This year it dished out 25 million prizes. Standard tickets cost $21 and people traditionally chip in and buy shares in several tickets with friends, family or workmates.

Many of the tickets were bought by workers and residents at the neighborhood's Penuelas retirees' home, where staff members have been buying the same ticket number for 14 years.

"We're delighted that some retirees also won," said therapist Evelyn Mayordomo, 36.

She said most of her lucky colleagues planned to pay off mortgages or buy apartments.

"We're all working class people ... people that needed it," said Mayordomo.

'Struck me twice'

Also fortunate was bank worker Marian Lopez, 37, who is four months pregnant and shared the top winning ticket with her mother.

"The 'Fat One' has struck me twice," she joked, referring to her slight bulge. She said she might spend the money fixing up her house.

Vicente Villaverde, 44, a gas company worker who lives across the street from the lottery office, said he has bought lottery tickets ending in 13 for the past six years.

"As I have had so much bad luck in my life, I have always said the number 13 will bring me fortune. And this year it has!" said Villaverde.

He planned to get speech classes for his seven-year-old son who has Down syndrome, and buy his girlfriend a car.

"The ham, the champagne, the whisky are on me this year!" he told his partner over the phone.

Augustin Ramos, who took over running the lucky lottery office four months ago, bought one of the 1,650 tickets for himself and his wife, Maria Josefa Rojo Cabrera.

"I felt happiness seeing that those that won needed the money," said Rojo Cabrera.

Spain established its national lottery as a charity in 1763, during the reign of King Carlos III, but its objective gradually shifted toward filling state coffers.

Organizers said ticket sales totaled $2.7 billion this year, up 3.5 percent from last year.