18030025 has 24 divisors (see below), whose sum is σ = 24920280. Its totient is φ = 12848640.

The previous prime is 18029971. The next prime is 18030041. The reversal of 18030025 is 52003081.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 4280761 + 13749264 = 2069^2 + 3708^2 .

It is not a de Polignac number, because 18030025 - 2⁷ = 18029897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18029984 and 18030011.

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, 8469 + ... + 10381.

It is an arithmetic number, because the mean of its divisors is an integer number (1038345).

Almost surely, 2^18030025 is an apocalyptic number.

It is an amenable number.

18030025 is a deficient number, since it is larger than the sum of its proper divisors (6890255).

18030025 is a wasteful number, since it uses less digits than its factorization.

18030025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1965 (or 1960 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 18030025 is about 4246.1776929375. The cubic root of 18030025 is about 262.2197765487.

The spelling of 18030025 in words is "eighteen million, thirty thousand, twenty-five".