18102425 has 12 divisors (see below), whose sum is σ = 24488016. Its totient is φ = 13165200.

The previous prime is 18102397. The next prime is 18102437. The reversal of 18102425 is 52420181.

It is not a de Polignac number, because 18102425 - 2⁸ = 18102169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18102425.

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, 32639 + ... + 33188.

It is an arithmetic number, because the mean of its divisors is an integer number (2040668).

Almost surely, 2^18102425 is an apocalyptic number.

It is an amenable number.

18102425 is a deficient number, since it is larger than the sum of its proper divisors (6385591).

18102425 is a wasteful number, since it uses less digits than its factorization.

18102425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65848 (or 65843 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18102425 is about 4254.6944661162. The cubic root of 18102425 is about 262.5702910778.

The spelling of 18102425 in words is "eighteen million, one hundred two thousand, four hundred twenty-five".