65564625 has 32 divisors (see below), whose sum is σ = 124690176. Its totient is φ = 29971200.

The previous prime is 65564623. The next prime is 65564627. The reversal of 65564625 is 52646556.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (65564623) and next prime (65564627).

It is not a de Polignac number, because 65564625 - 2¹ = 65564623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65564623) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9864 + ... + 15113.

It is an arithmetic number, because the mean of its divisors is an integer number (3896568).

Almost surely, 2^65564625 is an apocalyptic number.

It is an amenable number.

65564625 is a deficient number, since it is larger than the sum of its proper divisors (59125551).

65564625 is a wasteful number, since it uses less digits than its factorization.

65564625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25002 (or 24992 counting only the distinct ones).

The product of its digits is 216000, while the sum is 39.

The square root of 65564625 is about 8097.1985896358. The cubic root of 65564625 is about 403.2334273570.

The spelling of 65564625 in words is "sixty-five million, five hundred sixty-four thousand, six hundred twenty-five".