18525612 has 24 divisors (see below), whose sum is σ = 49401856. Its totient is φ = 5293008.

The previous prime is 18525601. The next prime is 18525613. The reversal of 18525612 is 21652581.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18525612.

It is not an unprimeable number, because it can be changed into a prime (18525613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110188 + ... + 110355.

Almost surely, 2^18525612 is an apocalyptic number.

18525612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18525612 is an abundant number, since it is smaller than the sum of its proper divisors (30876244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18525612 is a wasteful number, since it uses less digits than its factorization.

18525612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220557 (or 220555 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 18525612 is about 4304.1389382779. The cubic root of 18525612 is about 264.6006182823.

The spelling of 18525612 in words is "eighteen million, five hundred twenty-five thousand, six hundred twelve".