25123 has 8 divisors (see below), whose sum is σ = 29792. Its totient is φ = 20736.

The previous prime is 25121. The next prime is 25127. The reversal of 25123 is 32152.

25123 is nontrivially palindromic in base 2.

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

It is a 8-Lehmer number, since φ(25123) divides (25123-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 25123 - 2¹ = 25121 is a prime.

It is the 159-th Hogben number.

It is not an unprimeable number, because it can be changed into a prime (25121) by changing a digit.

It is a nontrivial repunit in base 158.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211 + ... + 307.

It is an arithmetic number, because the mean of its divisors is an integer number (3724).

2²⁵¹²³ is an apocalyptic number.

25123 is a deficient number, since it is larger than the sum of its proper divisors (4669).

25123 is an equidigital number, since it uses as much as digits as its factorization.

25123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141.

The product of its digits is 60, while the sum is 13.

The square root of 25123 is about 158.5023659129. The cubic root of 25123 is about 29.2880528429.

Adding to 25123 its reverse (32152), we get a palindrome (57275).

The spelling of 25123 in words is "twenty-five thousand, one hundred twenty-three".