18110725 has 12 divisors (see below), whose sum is σ = 23006340. Its totient is φ = 14134400.

The previous prime is 18110693. The next prime is 18110737. The reversal of 18110725 is 52701181.

It can be written as a sum of positive squares in 6 ways, for example, as 5536609 + 12574116 = 2353^2 + 3546^2 .

It is not a de Polignac number, because 18110725 - 2⁵ = 18110693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 18110725.

It is a congruent number.

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, 7810 + ... + 9859.

It is an arithmetic number, because the mean of its divisors is an integer number (1917195).

Almost surely, 2^18110725 is an apocalyptic number.

It is an amenable number.

18110725 is a deficient number, since it is larger than the sum of its proper divisors (4895615).

18110725 is a wasteful number, since it uses less digits than its factorization.

18110725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17720 (or 17715 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 18110725 is about 4255.6697475251. The cubic root of 18110725 is about 262.6104146234.

The spelling of 18110725 in words is "eighteen million, one hundred ten thousand, seven hundred twenty-five".