18863195225 has 24 divisors (see below), whose sum is σ = 26745312000. Its totient is φ = 12928245120.

The previous prime is 18863195173. The next prime is 18863195243. The reversal of 18863195225 is 52259136881.

It is not a de Polignac number, because 18863195225 - 2⁸ = 18863194969 is a prime.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334901 + ... + 387149.

It is an arithmetic number, because the mean of its divisors is an integer number (1114388000).

Almost surely, 2^18863195225 is an apocalyptic number.

It is an amenable number.

18863195225 is a deficient number, since it is larger than the sum of its proper divisors (7882116775).

18863195225 is a wasteful number, since it uses less digits than its factorization.

18863195225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54329 (or 54324 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The spelling of 18863195225 in words is "eighteen billion, eight hundred sixty-three million, one hundred ninety-five thousand, two hundred twenty-five".