general_fact: 62451 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 62451 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 62451 is an unremarkable number.
historical_date: December 25th is the day in 1868 that U.S. President Andrew Johnson grants unconditional pardon to all Civil War Confederate soldiers.