18864160225 has 12 divisors (see below), whose sum is σ = 23509110400. Its totient is φ = 15015488400.

The previous prime is 18864160193. The next prime is 18864160247. The reversal of 18864160225 is 52206146881.

It is not a de Polignac number, because 18864160225 - 2⁵ = 18864160193 is a prime.

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, 1890921 + ... + 1900870.

Almost surely, 2^18864160225 is an apocalyptic number.

It is an amenable number.

18864160225 is a deficient number, since it is larger than the sum of its proper divisors (4644950175).

18864160225 is a wasteful number, since it uses less digits than its factorization.

18864160225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792000 (or 3791995 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The spelling of 18864160225 in words is "eighteen billion, eight hundred sixty-four million, one hundred sixty thousand, two hundred twenty-five".