25715 has 8 divisors (see below), whose sum is σ = 31920. Its totient is φ = 19872.

The previous prime is 25703. The next prime is 25717. The reversal of 25715 is 51752.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25715 - 2¹⁰ = 24691 is a prime.

It is a super-2 number, since 2×25715² = 1322522450, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (25717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116 + ... + 254.

It is an arithmetic number, because the mean of its divisors is an integer number (3990).

2²⁵⁷¹⁵ is an apocalyptic number.

25715 is a deficient number, since it is larger than the sum of its proper divisors (6205).

25715 is a wasteful number, since it uses less digits than its factorization.

25715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181.

The product of its digits is 350, while the sum is 20.

The square root of 25715 is about 160.3589723090. The cubic root of 25715 is about 29.5163176984.

It can be divided in two parts, 257 and 15, that added together give a palindrome (272).

The spelling of 25715 in words is "twenty-five thousand, seven hundred fifteen".