8645625 has 60 divisors (see below), whose sum is σ = 16447860. Its totient is φ = 4368000.

The previous prime is 8645617. The next prime is 8645633. The reversal of 8645625 is 5265468.

8645625 is a `hidden beast` number, since 8 + 645 + 6 + 2 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (8645617) and next prime (8645633).

It can be written as a sum of positive squares in 10 ways, for example, as 5659641 + 2985984 = 2379^2 + 1728^2 .

It is not a de Polignac number, because 8645625 - 2³ = 8645617 is a prime.

Its product of digits (57600) is a multiple of the sum of its prime divisors (90).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8645625.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 163099 + ... + 163151.

It is an arithmetic number, because the mean of its divisors is an integer number (274131).

Almost surely, 2^8645625 is an apocalyptic number.

It is an amenable number.

8645625 is a deficient number, since it is larger than the sum of its proper divisors (7802235).

8645625 is a wasteful number, since it uses less digits than its factorization.

8645625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 90 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 8645625 is about 2940.3443675869. The cubic root of 8645625 is about 205.2416345645.

The spelling of 8645625 in words is "eight million, six hundred forty-five thousand, six hundred twenty-five".