18025385 has 48 divisors (see below), whose sum is σ = 27086400. Its totient is φ = 11458944.

The previous prime is 18025373. The next prime is 18025391. The reversal of 18025385 is 58352081.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18025385 is a prime.

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 47 ways as a sum of consecutive naturals, for example, 305486 + ... + 305544.

It is an arithmetic number, because the mean of its divisors is an integer number (564300).

Almost surely, 2^18025385 is an apocalyptic number.

It is an amenable number.

18025385 is a deficient number, since it is larger than the sum of its proper divisors (9061015).

18025385 is a wasteful number, since it uses less digits than its factorization.

18025385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 18025385 is about 4245.6312840377. The cubic root of 18025385 is about 262.1972806629.

The spelling of 18025385 in words is "eighteen million, twenty-five thousand, three hundred eighty-five".