18466725 has 12 divisors (see below), whose sum is σ = 30531776. Its totient is φ = 9848880.

The previous prime is 18466717. The next prime is 18466729. The reversal of 18466725 is 52766481.

It is not a de Polignac number, because 18466725 - 2³ = 18466717 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 (18466729) 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 11 ways as a sum of consecutive naturals, for example, 123037 + ... + 123186.

Almost surely, 2^18466725 is an apocalyptic number.

18466725 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18466725 is a deficient number, since it is larger than the sum of its proper divisors (12065051).

18466725 is a wasteful number, since it uses less digits than its factorization.

18466725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246236 (or 246231 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 18466725 is about 4297.2927524198. The cubic root of 18466725 is about 264.3199604305.

It can be divided in two parts, 18466 and 725, that added together give a palindrome (19191).

The spelling of 18466725 in words is "eighteen million, four hundred sixty-six thousand, seven hundred twenty-five".