25172 has 24 divisors (see below), whose sum is σ = 53760. Its totient is φ = 10080.

The previous prime is 25171. The next prime is 25183. The reversal of 25172 is 27152.

It is a self number, because there is not a number n which added to its sum of digits gives 25172.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25172.

It is not an unprimeable number, because it can be changed into a prime (25171) 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, 797 + ... + 827.

It is an arithmetic number, because the mean of its divisors is an integer number (2240).

2²⁵¹⁷² 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 25172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26880).

25172 is an abundant number, since it is smaller than the sum of its proper divisors (28588).

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

25172 is a wasteful number, since it uses less digits than its factorization.

25172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 69 counting only the distinct ones).

The product of its digits is 140, while the sum is 17.

The square root of 25172 is about 158.6568624422. The cubic root of 25172 is about 29.3070816556.

It can be divided in two parts, 251 and 72, that added together give a palindrome (323).

The spelling of 25172 in words is "twenty-five thousand, one hundred seventy-two".