18488808225 has 24 divisors (see below), whose sum is σ = 33964626720. Its totient is φ = 9860697360.

The previous prime is 18488808197. The next prime is 18488808227. The reversal of 18488808225 is 52280888481.

18488808225 is a `hidden beast` number, since 1 + 8 + 488 + 80 + 82 + 2 + 5 = 666.

It is not a de Polignac number, because 18488808225 - 2⁵ = 18488808193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18488808227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13694739 + ... + 13696088.

It is an arithmetic number, because the mean of its divisors is an integer number (1415192780).

Almost surely, 2^18488808225 is an apocalyptic number.

18488808225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18488808225 is a deficient number, since it is larger than the sum of its proper divisors (15475818495).

18488808225 is a wasteful number, since it uses less digits than its factorization.

18488808225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27390846 (or 27390835 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 54.

The spelling of 18488808225 in words is "eighteen billion, four hundred eighty-eight million, eight hundred eight thousand, two hundred twenty-five".