general_fact: 15205 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
math_fact: 15205 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
trivia: 15205 is an uninteresting number.
historical_date: August 17th is the day in 1945 that Sukarno and Mohammad Hatta proclaim the independence of Indonesia, igniting the Indonesian National Revolution against the Dutch Empire.