65825064564 has 24 divisors (see below), whose sum is σ = 175533505728. Its totient is φ = 18807161280.

The previous prime is 65825064551. The next prime is 65825064607. The reversal of 65825064564 is 46546052856.

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, 391815777 + ... + 391815944.

It is an arithmetic number, because the mean of its divisors is an integer number (7313896072).

Almost surely, 2^65825064564 is an apocalyptic number.

It is an amenable number.

65825064564 is an abundant number, since it is smaller than the sum of its proper divisors (109708441164).

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

65825064564 is a wasteful number, since it uses less digits than its factorization.

65825064564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783631735 (or 783631733 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 51.

The spelling of 65825064564 in words is "sixty-five billion, eight hundred twenty-five million, sixty-four thousand, five hundred sixty-four".