18268825 has 6 divisors (see below), whose sum is σ = 22653374. Its totient is φ = 14615040.

The previous prime is 18268807. The next prime is 18268849. The reversal of 18268825 is 52886281.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2996361 + 15272464 = 1731^2 + 3908^2 .

It is not a de Polignac number, because 18268825 - 2⁵ = 18268793 is a prime.

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 5 ways as a sum of consecutive naturals, for example, 365352 + ... + 365401.

Almost surely, 2^18268825 is an apocalyptic number.

It is an amenable number.

18268825 is a deficient number, since it is larger than the sum of its proper divisors (4384549).

18268825 is an equidigital number, since it uses as much as digits as its factorization.

18268825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730763 (or 730758 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 18268825 is about 4274.2046043679. The cubic root of 18268825 is about 263.3723659850.

The spelling of 18268825 in words is "eighteen million, two hundred sixty-eight thousand, eight hundred twenty-five".