25867 has 2 divisors, whose sum is σ = 25868. Its totient is φ = 25866.

The previous prime is 25849. The next prime is 25873. The reversal of 25867 is 76852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25867 - 2¹¹ = 23819 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12933 + 12934.

It is an arithmetic number, because the mean of its divisors is an integer number (12934).

2²⁵⁸⁶⁷ is an apocalyptic number.

25867 is a deficient number, since it is larger than the sum of its proper divisors (1).

25867 is an equidigital number, since it uses as much as digits as its factorization.

25867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 25867 is about 160.8322107042. The cubic root of 25867 is about 29.5743599490.

It can be divided in two parts, 258 and 67, that added together give a triangular number (325 = T₂₅).

The spelling of 25867 in words is "twenty-five thousand, eight hundred sixty-seven".