18025 has 12 divisors (see below), whose sum is σ = 25792. Its totient is φ = 12240.

The previous prime is 18013. The next prime is 18041. The reversal of 18025 is 52081.

It is a happy number.

It is not a de Polignac number, because 18025 - 2¹³ = 9833 is a prime.

It is a hoax number, since the sum of its digits (16) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

18025 is a lucky number.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124 + ... + 226.

2¹⁸⁰²⁵ is an apocalyptic number.

It is an amenable number.

18025 is a deficient number, since it is larger than the sum of its proper divisors (7767).

18025 is a wasteful number, since it uses less digits than its factorization.

18025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 18025 is about 134.2572158210. The cubic root of 18025 is about 26.2195413913.

The spelling of 18025 in words is "eighteen thousand, twenty-five".