18677225 has 12 divisors (see below), whose sum is σ = 26468544. Its totient is φ = 12807120.

The previous prime is 18677213. The next prime is 18677231. The reversal of 18677225 is 52277681.

It is not a de Polignac number, because 18677225 - 2¹⁰ = 18676201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53189 + ... + 53538.

It is an arithmetic number, because the mean of its divisors is an integer number (2205712).

Almost surely, 2^18677225 is an apocalyptic number.

It is an amenable number.

18677225 is a deficient number, since it is larger than the sum of its proper divisors (7791319).

18677225 is a wasteful number, since it uses less digits than its factorization.

18677225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106744 (or 106739 counting only the distinct ones).

The product of its digits is 47040, while the sum is 38.

The square root of 18677225 is about 4321.7155158571. The cubic root of 18677225 is about 265.3204856381.

The spelling of 18677225 in words is "eighteen million, six hundred seventy-seven thousand, two hundred twenty-five".