Fait mathématique: 48419 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Culture générale: 48419 is an unremarkable number.
Date historique: July 25th is the day in 1909 that Louis Blériot makes the first flight across the English Channel in a heavier-than-air machine from (Calais to Dover) in 37 minutes.