18525625 has 10 divisors (see below), whose sum is σ = 23150402. Its totient is φ = 14820000.

The previous prime is 18525623. The next prime is 18525643. The reversal of 18525625 is 52652581.

It can be written as a sum of positive squares in 5 ways, for example, as 2812329 + 15713296 = 1677^2 + 3964^2 .

It is not a de Polignac number, because 18525625 - 2¹ = 18525623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18525623) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14196 + ... + 15445.

Almost surely, 2^18525625 is an apocalyptic number.

It is an amenable number.

18525625 is a deficient number, since it is larger than the sum of its proper divisors (4624777).

18525625 is an frugal number, since it uses more digits than its factorization.

18525625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29661 (or 29646 counting only the distinct ones).

The product of its digits is 24000, while the sum is 34.

The square root of 18525625 is about 4304.1404484519. The cubic root of 18525625 is about 264.6006801751.

The spelling of 18525625 in words is "eighteen million, five hundred twenty-five thousand, six hundred twenty-five".