general_fact: 13752 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 13752 is a boring number.
trivia: 13752 is an unremarkable number.
historical_date: August 25th is the day in 1989 that Voyager 2 spacecraft makes its closest approach to Neptune, the outermost planet in the Solar System.