18162025 has 24 divisors (see below), whose sum is σ = 26139200. Its totient is φ = 12260160.

The previous prime is 18162007. The next prime is 18162031. The reversal of 18162025 is 52026181.

It is not a de Polignac number, because 18162025 - 2⁵ = 18161993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10951 + ... + 12499.

Almost surely, 2^18162025 is an apocalyptic number.

It is an amenable number.

18162025 is a deficient number, since it is larger than the sum of its proper divisors (7977175).

18162025 is a wasteful number, since it uses less digits than its factorization.

18162025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1628 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18162025 is about 4261.6927388070. The cubic root of 18162025 is about 262.8581355029.

The spelling of 18162025 in words is "eighteen million, one hundred sixty-two thousand, twenty-five".