18075825 has 48 divisors (see below), whose sum is σ = 33827200. Its totient is φ = 9460800.

The previous prime is 18075817. The next prime is 18075829. The reversal of 18075825 is 52857081.

It is not a de Polignac number, because 18075825 - 2³ = 18075817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18075825.

It is not an unprimeable number, because it can be changed into a prime (18075829) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 40956 + ... + 41394.

Almost surely, 2^18075825 is an apocalyptic number.

18075825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18075825 is a deficient number, since it is larger than the sum of its proper divisors (15751375).

18075825 is a wasteful number, since it uses less digits than its factorization.

18075825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 18075825 is about 4251.5673580457. The cubic root of 18075825 is about 262.4416196702.

The spelling of 18075825 in words is "eighteen million, seventy-five thousand, eight hundred twenty-five".