18880925 has 18 divisors (see below), whose sum is σ = 27236538. Its totient is φ = 12946080.

The previous prime is 18880909. The next prime is 18880937. The reversal of 18880925 is 52908881.

It can be written as a sum of positive squares in 3 ways, for example, as 3678724 + 15202201 = 1918^2 + 3899^2 .

It is not a de Polignac number, because 18880925 - 2⁴ = 18880909 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6482 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (1513141).

Almost surely, 2^18880925 is an apocalyptic number.

It is an amenable number.

18880925 is a deficient number, since it is larger than the sum of its proper divisors (8355613).

18880925 is a wasteful number, since it uses less digits than its factorization.

18880925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15437 (or 15425 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 41.

The square root of 18880925 is about 4345.2186366166. The cubic root of 18880925 is about 266.2815578249.

The spelling of 18880925 in words is "eighteen million, eight hundred eighty thousand, nine hundred twenty-five".