25187 has 4 divisors (see below), whose sum is σ = 25560. Its totient is φ = 24816.

The previous prime is 25183. The next prime is 25189. The reversal of 25187 is 78152.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25187 - 2² = 25183 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

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

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 3 ways as a sum of consecutive naturals, for example, 53 + ... + 230.

It is an arithmetic number, because the mean of its divisors is an integer number (6390).

2²⁵¹⁸⁷ is an apocalyptic number.

25187 is a deficient number, since it is larger than the sum of its proper divisors (373).

25187 is an equidigital number, since it uses as much as digits as its factorization.

25187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372.

The product of its digits is 560, while the sum is 23.

The square root of 25187 is about 158.7041272305. The cubic root of 25187 is about 29.3129018650.

It can be divided in two parts, 25 and 187, that added together give a palindrome (212).

The spelling of 25187 in words is "twenty-five thousand, one hundred eighty-seven".