18573625 has 16 divisors (see below), whose sum is σ = 26492544. Its totient is φ = 12735600.

The previous prime is 18573589. The next prime is 18573631. The reversal of 18573625 is 52637581.

It is not a de Polignac number, because 18573625 - 2¹⁷ = 18442553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9739 + ... + 11488.

It is an arithmetic number, because the mean of its divisors is an integer number (1655784).

Almost surely, 2^18573625 is an apocalyptic number.

It is an amenable number.

18573625 is a deficient number, since it is larger than the sum of its proper divisors (7918919).

18573625 is an equidigital number, since it uses as much as digits as its factorization.

18573625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21249 (or 21239 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 18573625 is about 4309.7128674658. The cubic root of 18573625 is about 264.8290103772.

It can be divided in two parts, 185736 and 25, that added together give a square (185761 = 431²).

The spelling of 18573625 in words is "eighteen million, five hundred seventy-three thousand, six hundred twenty-five".