18648025 has 48 divisors (see below), whose sum is σ = 27498240. Its totient is φ = 12398400.

The previous prime is 18648013. The next prime is 18648059. The reversal of 18648025 is 52084681.

It is not a de Polignac number, because 18648025 - 2⁹ = 18647513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 224634 + ... + 224716.

It is an arithmetic number, because the mean of its divisors is an integer number (572880).

Almost surely, 2^18648025 is an apocalyptic number.

It is an amenable number.

18648025 is a deficient number, since it is larger than the sum of its proper divisors (8850215).

18648025 is a wasteful number, since it uses less digits than its factorization.

18648025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18648025 is about 4318.3359063417. The cubic root of 18648025 is about 265.1821460453.

It can be divided in two parts, 1864 and 8025, that added together give a palindrome (9889).

The spelling of 18648025 in words is "eighteen million, six hundred forty-eight thousand, twenty-five".