225649804 has 24 divisors (see below), whose sum is σ = 399108528. Its totient is φ = 111625920.

The previous prime is 225649771. The next prime is 225649811. The reversal of 225649804 is 408946522.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163662 + ... + 165034.

It is an arithmetic number, because the mean of its divisors is an integer number (16629522).

Almost surely, 2^225649804 is an apocalyptic number.

It is an amenable number.

225649804 is a deficient number, since it is larger than the sum of its proper divisors (173458724).

225649804 is a wasteful number, since it uses less digits than its factorization.

225649804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785 (or 1783 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 225649804 is about 15021.6445171626. The cubic root of 225649804 is about 608.8051537153.

The spelling of 225649804 in words is "two hundred twenty-five million, six hundred forty-nine thousand, eight hundred four".