25587 has 6 divisors (see below), whose sum is σ = 36972. Its totient is φ = 17052.

The previous prime is 25583. The next prime is 25589. The reversal of 25587 is 78552.

It is a happy number.

It is not a de Polignac number, because 25587 - 2² = 25583 is a prime.

It is a plaindrome in base 15.

It is a nialpdrome in base 13.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 25587.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25587.

It is not an unprimeable number, because it can be changed into a prime (25583) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1413 + ... + 1430.

It is an arithmetic number, because the mean of its divisors is an integer number (6162).

2²⁵⁵⁸⁷ is an apocalyptic number.

25587 is a deficient number, since it is larger than the sum of its proper divisors (11385).

25587 is a wasteful number, since it uses less digits than its factorization.

25587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2849 (or 2846 counting only the distinct ones).

The product of its digits is 2800, while the sum is 27.

The square root of 25587 is about 159.9593698412. The cubic root of 25587 is about 29.4672623518.

The spelling of 25587 in words is "twenty-five thousand, five hundred eighty-seven".