25969 has 2 divisors, whose sum is σ = 25970. Its totient is φ = 25968.

The previous prime is 25951. The next prime is 25981. The reversal of 25969 is 96952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18225 + 7744 = 135^2 + 88^2 .

It is a cyclic number.

It is not a de Polignac number, because 25969 - 2⁷ = 25841 is a prime.

It is a super-2 number, since 2×25969² = 1348777922, which contains 22 as substring.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 25969.

It is not a weakly prime, because it can be changed into another prime (25919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12984 + 12985.

It is an arithmetic number, because the mean of its divisors is an integer number (12985).

2²⁵⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

25969 is a deficient number, since it is larger than the sum of its proper divisors (1).

25969 is an equidigital number, since it uses as much as digits as its factorization.

25969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4860, while the sum is 31.

The square root of 25969 is about 161.1489993764. The cubic root of 25969 is about 29.6131819787.

It can be divided in two parts, 259 and 69, that multiplied together give a palindrome (17871).

The spelling of 25969 in words is "twenty-five thousand, nine hundred sixty-nine".