18804925 has 6 divisors (see below), whose sum is σ = 23318138. Its totient is φ = 15043920.

The previous prime is 18804913. The next prime is 18804943. The reversal of 18804925 is 52940881.

It can be written as a sum of positive squares in 3 ways, for example, as 3147076 + 15657849 = 1774^2 + 3957^2 .

It is not a de Polignac number, because 18804925 - 2⁹ = 18804413 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 5 ways as a sum of consecutive naturals, for example, 376074 + ... + 376123.

Almost surely, 2^18804925 is an apocalyptic number.

It is an amenable number.

18804925 is a deficient number, since it is larger than the sum of its proper divisors (4513213).

18804925 is an equidigital number, since it uses as much as digits as its factorization.

18804925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752207 (or 752202 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 18804925 is about 4336.4645738205. The cubic root of 18804925 is about 265.9237961748.

The spelling of 18804925 in words is "eighteen million, eight hundred four thousand, nine hundred twenty-five".