18693725 has 12 divisors (see below), whose sum is σ = 23239584. Its totient is φ = 14916720.

The previous prime is 18693721. The next prime is 18693749. The reversal of 18693725 is 52739681.

It is not a de Polignac number, because 18693725 - 2² = 18693721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18693721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12992 + ... + 14358.

It is an arithmetic number, because the mean of its divisors is an integer number (1936632).

Almost surely, 2^18693725 is an apocalyptic number.

It is an amenable number.

18693725 is a deficient number, since it is larger than the sum of its proper divisors (4545859).

18693725 is a wasteful number, since it uses less digits than its factorization.

18693725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924 (or 1919 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 18693725 is about 4323.6240585879. The cubic root of 18693725 is about 265.3985932351.

The spelling of 18693725 in words is "eighteen million, six hundred ninety-three thousand, seven hundred twenty-five".