General fact: 425 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Mathematical fact: 425 is the number of subsets of {1,2,3,...,11} that have an integer average.
Trivia: 425 is an unremarkable number.
Historical date: February 28th is the day in 1940 that Basketball is televised for the first time (Fordham University vs. the University of Pittsburgh in Madison Square Garden).