18724925 has 12 divisors (see below), whose sum is σ = 23275296. Its totient is φ = 14943600.

The previous prime is 18724913. The next prime is 18724931. The reversal of 18724925 is 52942781.

It is not a de Polignac number, because 18724925 - 2¹⁴ = 18708541 is a prime.

It is a Duffinian 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, 15182 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (1939608).

Almost surely, 2^18724925 is an apocalyptic number.

It is an amenable number.

18724925 is a deficient number, since it is larger than the sum of its proper divisors (4550371).

18724925 is a wasteful number, since it uses less digits than its factorization.

18724925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1828 (or 1823 counting only the distinct ones).

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

The square root of 18724925 is about 4327.2306386418. The cubic root of 18724925 is about 265.5461620702.

The spelling of 18724925 in words is "eighteen million, seven hundred twenty-four thousand, nine hundred twenty-five".