225720365456 has 20 divisors (see below), whose sum is σ = 437409457500. Its totient is φ = 112840505472.

The previous prime is 225720365443. The next prime is 225720365461. The reversal of 225720365456 is 654563027522.

It can be written as a sum of positive squares in 2 ways, for example, as 27285753856 + 198434611600 = 165184^2 + 445460^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 225720365456.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1134971 + ... + 1318938.

It is an arithmetic number, because the mean of its divisors is an integer number (21870472875).

Almost surely, 2^225720365456 is an apocalyptic number.

It is an amenable number.

225720365456 is a deficient number, since it is larger than the sum of its proper divisors (211689092044).

225720365456 is a wasteful number, since it uses less digits than its factorization.

225720365456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2459666 (or 2459660 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 47.

The spelling of 225720365456 in words is "two hundred twenty-five billion, seven hundred twenty million, three hundred sixty-five thousand, four hundred fifty-six".