25415 has 16 divisors (see below), whose sum is σ = 36288. Its totient is φ = 16896.

The previous prime is 25411. The next prime is 25423. The reversal of 25415 is 51452.

It is a cyclic number.

It is not a de Polignac number, because 25415 - 2² = 25411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 25393 and 25402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25411) 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, 1094 + ... + 1116.

It is an arithmetic number, because the mean of its divisors is an integer number (2268).

2²⁵⁴¹⁵ is an apocalyptic number.

25415 is a deficient number, since it is larger than the sum of its proper divisors (10873).

25415 is a wasteful number, since it uses less digits than its factorization.

25415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58.

The product of its digits is 200, while the sum is 17.

The square root of 25415 is about 159.4208267448. The cubic root of 25415 is about 29.4010859272.

Adding to 25415 its reverse (51452), we get a palindrome (76867).

The spelling of 25415 in words is "twenty-five thousand, four hundred fifteen".