18010725225 has 48 divisors (see below), whose sum is σ = 32262702912. Its totient is φ = 8830402560.

The previous prime is 18010725223. The next prime is 18010725263. The reversal of 18010725225 is 52252701081.

It is not a de Polignac number, because 18010725225 - 2¹ = 18010725223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18010725223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 109432 + ... + 219081.

It is an arithmetic number, because the mean of its divisors is an integer number (672139644).

Almost surely, 2^18010725225 is an apocalyptic number.

18010725225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18010725225 is a deficient number, since it is larger than the sum of its proper divisors (14251977687).

18010725225 is a wasteful number, since it uses less digits than its factorization.

18010725225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328586 (or 328581 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 33.

The spelling of 18010725225 in words is "eighteen billion, ten million, seven hundred twenty-five thousand, two hundred twenty-five".