18788925 has 24 divisors (see below), whose sum is σ = 31193440. Its totient is φ = 9979200.

The previous prime is 18788921. The next prime is 18788941. The reversal of 18788925 is 52988781.

It is not a de Polignac number, because 18788925 - 2² = 18788921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18788921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28095 + ... + 28755.

Almost surely, 2^18788925 is an apocalyptic number.

18788925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18788925 is a deficient number, since it is larger than the sum of its proper divisors (12404515).

18788925 is a wasteful number, since it uses less digits than its factorization.

18788925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1048 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The square root of 18788925 is about 4334.6193604514. The cubic root of 18788925 is about 265.8483551574.

The spelling of 18788925 in words is "eighteen million, seven hundred eighty-eight thousand, nine hundred twenty-five".