25164 has 24 divisors (see below), whose sum is σ = 65520. Its totient is φ = 8352.

The previous prime is 25163. The next prime is 25169. The reversal of 25164 is 46152.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25164.

It is not an unprimeable number, because it can be changed into a prime (25163) 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, 9 + ... + 224.

It is an arithmetic number, because the mean of its divisors is an integer number (2730).

2²⁵¹⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32760).

25164 is an abundant number, since it is smaller than the sum of its proper divisors (40356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25164 is a wasteful number, since it uses less digits than its factorization.

25164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 238 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 25164 is about 158.6316487968. The cubic root of 25164 is about 29.3039765984.

The spelling of 25164 in words is "twenty-five thousand, one hundred sixty-four".