18924725 has 12 divisors (see below), whose sum is σ = 24224640. Its totient is φ = 14650800.

The previous prime is 18924713. The next prime is 18924749. The reversal of 18924725 is 52742981.

It is not a de Polignac number, because 18924725 - 2²² = 14730421 is a prime.

It is a super-3 number, since 3×18924725³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

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, 11435 + ... + 12984.

It is an arithmetic number, because the mean of its divisors is an integer number (2018720).

Almost surely, 2^18924725 is an apocalyptic number.

It is an amenable number.

18924725 is a deficient number, since it is larger than the sum of its proper divisors (5299915).

18924725 is a wasteful number, since it uses less digits than its factorization.

18924725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24460 (or 24455 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 18924725 is about 4350.2557396089. The cubic root of 18924725 is about 266.4873056034.

The spelling of 18924725 in words is "eighteen million, nine hundred twenty-four thousand, seven hundred twenty-five".