225662021656 has 64 divisors (see below), whose sum is σ = 458584156800. Its totient is φ = 103688083968.

The previous prime is 225662021647. The next prime is 225662021719. The reversal of 225662021656 is 656120266522.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24200211 + ... + 24209533.

It is an arithmetic number, because the mean of its divisors is an integer number (7165377450).

Almost surely, 2^225662021656 is an apocalyptic number.

It is an amenable number.

225662021656 is an abundant number, since it is smaller than the sum of its proper divisors (232922135144).

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

225662021656 is a wasteful number, since it uses less digits than its factorization.

225662021656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13528 (or 13524 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 225662021656 in words is "two hundred twenty-five billion, six hundred sixty-two million, twenty-one thousand, six hundred fifty-six".