18292018225 has 12 divisors (see below), whose sum is σ = 24426880156. Its totient is φ = 13507951680.

The previous prime is 18292018201. The next prime is 18292018247. The reversal of 18292018225 is 52281029281.

It can be written as a sum of positive squares in 6 ways, for example, as 1049176881 + 17242841344 = 32391^2 + 131312^2 .

It is not a de Polignac number, because 18292018225 - 2⁷ = 18292018097 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28141242 + ... + 28141891.

Almost surely, 2^18292018225 is an apocalyptic number.

It is an amenable number.

18292018225 is a deficient number, since it is larger than the sum of its proper divisors (6134861931).

18292018225 is a wasteful number, since it uses less digits than its factorization.

18292018225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56283156 (or 56283151 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 40.

The spelling of 18292018225 in words is "eighteen billion, two hundred ninety-two million, eighteen thousand, two hundred twenty-five".