Fatto generale: 4252 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 4252 is the smallest number in base 8 to have 5 different digits.
Trivia: 4252 is a boring number.
Data storica: August 22nd is the day in 1989 that Nolan Ryan strikes out Rickey Henderson to become the first Major League Baseball pitcher to record 5,000 strikeouts.