25185 has 16 divisors (see below), whose sum is σ = 42624. Its totient is φ = 12672.

The previous prime is 25183. The next prime is 25189. The reversal of 25185 is 58152.

It is not a de Polignac number, because 25185 - 2¹ = 25183 is a prime.

25185 is a modest number, since divided by 185 gives 25 as remainder.

25185 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (25183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309 + ... + 381.

It is an arithmetic number, because the mean of its divisors is an integer number (2664).

2²⁵¹⁸⁵ is an apocalyptic number.

It is an amenable number.

25185 is a deficient number, since it is larger than the sum of its proper divisors (17439).

25185 is a wasteful number, since it uses less digits than its factorization.

25185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104.

The product of its digits is 400, while the sum is 21.

The square root of 25185 is about 158.6978260721. The cubic root of 25185 is about 29.3121259706.

It can be divided in two parts, 25 and 185, that added together give a triangular number (210 = T₂₀).

The spelling of 25185 in words is "twenty-five thousand, one hundred eighty-five".