65825064565 has 32 divisors (see below), whose sum is σ = 87730384896. Its totient is φ = 47104727040.

The previous prime is 65825064551. The next prime is 65825064607. The reversal of 65825064565 is 56546052856.

It is a de Polignac number, because none of the positive numbers 2^k-65825064565 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 262245 + ... + 447685.

It is an arithmetic number, because the mean of its divisors is an integer number (2741574528).

Almost surely, 2^65825064565 is an apocalyptic number.

65825064565 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65825064565 is a deficient number, since it is larger than the sum of its proper divisors (21905320331).

65825064565 is a wasteful number, since it uses less digits than its factorization.

65825064565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185629.

The product of its (nonzero) digits is 8640000, while the sum is 52.

The spelling of 65825064565 in words is "sixty-five billion, eight hundred twenty-five million, sixty-four thousand, five hundred sixty-five".