Fatto matematico: 1225 is the smallest number that can be written as the sum of 4 cubes in 3 ways.
Trivia: 1225 is an unremarkable number.
Data storica: May 9th is the day in 1964 that Ngo Dinh Can, de facto ruler of central Vietnam under his brother President Ngo Dinh Diem before the family's toppling, is executed.