656225522656 has 24 divisors (see below), whose sum is σ = 1409393452824. Its totient is φ = 298284328320.

The previous prime is 656225522639. The next prime is 656225522683.

656225522656 is nontrivially palindromic in base 10.

It is a congruent number.

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, 932138175 + ... + 932138878.

It is an arithmetic number, because the mean of its divisors is an integer number (58724727201).

Almost surely, 2^656225522656 is an apocalyptic number.

It is an amenable number.

656225522656 is an abundant number, since it is smaller than the sum of its proper divisors (753167930168).

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

656225522656 is a wasteful number, since it uses less digits than its factorization.

656225522656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864277074 (or 1864277066 counting only the distinct ones).

The product of its digits is 12960000, while the sum is 52.

The spelling of 656225522656 in words is "six hundred fifty-six billion, two hundred twenty-five million, five hundred twenty-two thousand, six hundred fifty-six".