18425725 has 12 divisors (see below), whose sum is σ = 24051040. Its totient is φ = 13964400.

The previous prime is 18425717. The next prime is 18425731. The reversal of 18425725 is 52752481.

It is a happy number.

It is not a de Polignac number, because 18425725 - 2³ = 18425717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18921 + ... + 19870.

Almost surely, 2^18425725 is an apocalyptic number.

It is an amenable number.

18425725 is a deficient number, since it is larger than the sum of its proper divisors (5625315).

18425725 is a wasteful number, since it uses less digits than its factorization.

18425725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38820 (or 38815 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 18425725 is about 4292.5196563324. The cubic root of 18425725 is about 264.1242002455.

The spelling of 18425725 in words is "eighteen million, four hundred twenty-five thousand, seven hundred twenty-five".