64535625 has 120 divisors (see below), whose sum is σ = 146203200. Its totient is φ = 26640000.

The previous prime is 64535623. The next prime is 64535629. The reversal of 64535625 is 52653546.

It is a happy number.

64535625 is a `hidden beast` number, since 64 + 535 + 62 + 5 = 666.

It is not a de Polignac number, because 64535625 - 2¹ = 64535623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64535625.

It is not an unprimeable number, because it can be changed into a prime (64535623) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 433051 + ... + 433199.

It is an arithmetic number, because the mean of its divisors is an integer number (1218360).

Almost surely, 2^64535625 is an apocalyptic number.

It is an amenable number.

64535625 is an abundant number, since it is smaller than the sum of its proper divisors (81667575).

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

64535625 is a wasteful number, since it uses less digits than its factorization.

64535625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 175 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 64535625 is about 8033.4068115588. The cubic root of 64535625 is about 401.1127868097.

The spelling of 64535625 in words is "sixty-four million, five hundred thirty-five thousand, six hundred twenty-five".