25331 has 4 divisors (see below), whose sum is σ = 25752. Its totient is φ = 24912.

The previous prime is 25321. The next prime is 25339. The reversal of 25331 is 13352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25331 is a prime.

It is a super-2 number, since 2×25331² = 1283319122, which contains 22 as substring.

It is a Duffinian number.

25331 is a Rhonda number in base 9.

It is a plaindrome in base 12 and base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 25331.

It is not an unprimeable number, because it can be changed into a prime (25339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101 + ... + 246.

It is an arithmetic number, because the mean of its divisors is an integer number (6438).

2²⁵³³¹ is an apocalyptic number.

25331 is a deficient number, since it is larger than the sum of its proper divisors (421).

25331 is an equidigital number, since it uses as much as digits as its factorization.

25331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420.

The product of its digits is 90, while the sum is 14.

The square root of 25331 is about 159.1571550387. The cubic root of 25331 is about 29.3686586583.

Adding to 25331 its reverse (13352), we get a palindrome (38683).

The spelling of 25331 in words is "twenty-five thousand, three hundred thirty-one".