25951 has 2 divisors, whose sum is σ = 25952. Its totient is φ = 25950.

The previous prime is 25943. The next prime is 25969. The reversal of 25951 is 15952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25951 - 2³ = 25943 is a prime.

It is a nialpdrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12975 + 12976.

It is an arithmetic number, because the mean of its divisors is an integer number (12976).

2²⁵⁹⁵¹ is an apocalyptic number.

25951 is a deficient number, since it is larger than the sum of its proper divisors (1).

25951 is an equidigital number, since it uses as much as digits as its factorization.

25951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 450, while the sum is 22.

The square root of 25951 is about 161.0931407602. The cubic root of 25951 is about 29.6063384283.

Subtracting from 25951 its reverse (15952), we obtain a palindrome (9999).

The spelling of 25951 in words is "twenty-five thousand, nine hundred fifty-one".