64568825 has 6 divisors (see below), whose sum is σ = 80065374. Its totient is φ = 51655040.

The previous prime is 64568807. The next prime is 64568827. The reversal of 64568825 is 52886546.

It can be written as a sum of positive squares in 3 ways, for example, as 14258176 + 50310649 = 3776^2 + 7093^2 .

It is not a de Polignac number, because 64568825 - 2¹⁴ = 64552441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64568827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1291352 + ... + 1291401.

It is an arithmetic number, because the mean of its divisors is an integer number (13344229).

Almost surely, 2^64568825 is an apocalyptic number.

It is an amenable number.

64568825 is a deficient number, since it is larger than the sum of its proper divisors (15496549).

64568825 is a wasteful number, since it uses less digits than its factorization.

64568825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582763 (or 2582758 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 64568825 is about 8035.4729170099. The cubic root of 64568825 is about 401.1815584459.

The spelling of 64568825 in words is "sixty-four million, five hundred sixty-eight thousand, eight hundred twenty-five".