64566325 has 12 divisors (see below), whose sum is σ = 82823940. Its totient is φ = 49871360.

The previous prime is 64566301. The next prime is 64566329. The reversal of 64566325 is 52366546.

It can be written as a sum of positive squares in 6 ways, for example, as 8346321 + 56220004 = 2889^2 + 7498^2 .

It is not a de Polignac number, because 64566325 - 2⁷ = 64566197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64566329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43804 + ... + 45253.

It is an arithmetic number, because the mean of its divisors is an integer number (6901995).

Almost surely, 2^64566325 is an apocalyptic number.

It is an amenable number.

64566325 is a deficient number, since it is larger than the sum of its proper divisors (18257615).

64566325 is a wasteful number, since it uses less digits than its factorization.

64566325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89096 (or 89091 counting only the distinct ones).

The product of its digits is 129600, while the sum is 37.

The square root of 64566325 is about 8035.3173552760. The cubic root of 64566325 is about 401.1763806797.

The spelling of 64566325 in words is "sixty-four million, five hundred sixty-six thousand, three hundred twenty-five".