64589625 has 24 divisors (see below), whose sum is σ = 116435592. Its totient is φ = 34447200.

The previous prime is 64589617. The next prime is 64589627. The reversal of 64589625 is 52698546.

64589625 is a `hidden beast` number, since 6 + 4 + 589 + 62 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12446784 + 52142841 = 3528^2 + 7221^2 .

It is not a de Polignac number, because 64589625 - 2³ = 64589617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (64589627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27582 + ... + 29831.

It is an arithmetic number, because the mean of its divisors is an integer number (4851483).

Almost surely, 2^64589625 is an apocalyptic number.

It is an amenable number.

64589625 is a deficient number, since it is larger than the sum of its proper divisors (51845967).

64589625 is a wasteful number, since it uses less digits than its factorization.

64589625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57434 (or 57421 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 64589625 is about 8036.7670738923. The cubic root of 64589625 is about 401.2246322798.

The spelling of 64589625 in words is "sixty-four million, five hundred eighty-nine thousand, six hundred twenty-five".