225299688 has 32 divisors (see below), whose sum is σ = 564386400. Its totient is φ = 74948288.

The previous prime is 225299609. The next prime is 225299693. The reversal of 225299688 is 886992522.

It is a self number, because there is not a number n which added to its sum of digits gives 225299688.

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, 2995 + ... + 21437.

It is an arithmetic number, because the mean of its divisors is an integer number (17637075).

Almost surely, 2^225299688 is an apocalyptic number.

It is an amenable number.

225299688 is an abundant number, since it is smaller than the sum of its proper divisors (339086712).

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

225299688 is a wasteful number, since it uses less digits than its factorization.

225299688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18961 (or 18957 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 51.

The square root of 225299688 is about 15009.9862758098. The cubic root of 225299688 is about 608.4901187093.

The spelling of 225299688 in words is "two hundred twenty-five million, two hundred ninety-nine thousand, six hundred eighty-eight".