65625631456 has 48 divisors (see below), whose sum is σ = 161081101440. Its totient is φ = 25568426880.

The previous prime is 65625631447. The next prime is 65625631483. The reversal of 65625631456 is 65413652656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13314426 + ... + 13319353.

It is an arithmetic number, because the mean of its divisors is an integer number (3355856280).

Almost surely, 2^65625631456 is an apocalyptic number.

It is an amenable number.

65625631456 is an abundant number, since it is smaller than the sum of its proper divisors (95455469984).

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

65625631456 is a wasteful number, since it uses less digits than its factorization.

65625631456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26633807 (or 26633799 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 49.

The spelling of 65625631456 in words is "sixty-five billion, six hundred twenty-five million, six hundred thirty-one thousand, four hundred fifty-six".