225724022656 has 32 divisors (see below), whose sum is σ = 490564995480. Its totient is φ = 102601827840.

The previous prime is 225724022639. The next prime is 225724022659. The reversal of 225724022656 is 656220427522.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225724022659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80156271 + ... + 80159086.

Almost surely, 2^225724022656 is an apocalyptic number.

It is an amenable number.

225724022656 is an abundant number, since it is smaller than the sum of its proper divisors (264840972824).

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

225724022656 is a wasteful number, since it uses less digits than its factorization.

225724022656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160315382 (or 160315370 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 43.

The spelling of 225724022656 in words is "two hundred twenty-five billion, seven hundred twenty-four million, twenty-two thousand, six hundred fifty-six".