225519864 has 32 divisors (see below), whose sum is σ = 576913920. Its totient is φ = 73424736.

The previous prime is 225519857. The next prime is 225519919. The reversal of 225519864 is 468915522.

225519864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108232 + ... + 110295.

It is an arithmetic number, because the mean of its divisors is an integer number (18028560).

Almost surely, 2^225519864 is an apocalyptic number.

225519864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

225519864 is an abundant number, since it is smaller than the sum of its proper divisors (351394056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225519864 is a wasteful number, since it uses less digits than its factorization.

225519864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218579 (or 218575 counting only the distinct ones).

The product of its digits is 172800, while the sum is 42.

The square root of 225519864 is about 15017.3188019699. The cubic root of 225519864 is about 608.6882715230.

The spelling of 225519864 in words is "two hundred twenty-five million, five hundred nineteen thousand, eight hundred sixty-four".