18625925 has 6 divisors (see below), whose sum is σ = 23096178. Its totient is φ = 14900720.

The previous prime is 18625913. The next prime is 18625939. The reversal of 18625925 is 52952681.

It can be written as a sum of positive squares in 3 ways, for example, as 187489 + 18438436 = 433^2 + 4294^2 .

It is not a de Polignac number, because 18625925 - 2¹⁴ = 18609541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 372494 + ... + 372543.

It is an arithmetic number, because the mean of its divisors is an integer number (3849363).

Almost surely, 2^18625925 is an apocalyptic number.

It is an amenable number.

18625925 is a deficient number, since it is larger than the sum of its proper divisors (4470253).

18625925 is an equidigital number, since it uses as much as digits as its factorization.

18625925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745047 (or 745042 counting only the distinct ones).

The product of its digits is 43200, while the sum is 38.

The square root of 18625925 is about 4315.7762917000. The cubic root of 18625925 is about 265.0773477788.

The spelling of 18625925 in words is "eighteen million, six hundred twenty-five thousand, nine hundred twenty-five".