18486925 has 12 divisors (see below), whose sum is σ = 23141376. Its totient is φ = 14649200.

The previous prime is 18486911. The next prime is 18486929. The reversal of 18486925 is 52968481.

It is a happy number.

It is not a de Polignac number, because 18486925 - 2¹⁷ = 18355853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18486929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 781 + ... + 6130.

It is an arithmetic number, because the mean of its divisors is an integer number (1928448).

Almost surely, 2^18486925 is an apocalyptic number.

It is an amenable number.

18486925 is a deficient number, since it is larger than the sum of its proper divisors (4654451).

18486925 is a wasteful number, since it uses less digits than its factorization.

18486925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7028 (or 7023 counting only the distinct ones).

The product of its digits is 138240, while the sum is 43.

The square root of 18486925 is about 4299.6424269932. The cubic root of 18486925 is about 264.4163015988.

The spelling of 18486925 in words is "eighteen million, four hundred eighty-six thousand, nine hundred twenty-five".