25855867 has 2 divisors, whose sum is σ = 25855868. Its totient is φ = 25855866.

The previous prime is 25855799. The next prime is 25855877. The reversal of 25855867 is 76855852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25855867 - 2²³ = 17467259 is a prime.

It is not a weakly prime, because it can be changed into another prime (25855877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12927933 + 12927934.

It is an arithmetic number, because the mean of its divisors is an integer number (12927934).

Almost surely, 2^25855867 is an apocalyptic number.

25855867 is a deficient number, since it is larger than the sum of its proper divisors (1).

25855867 is an equidigital number, since it uses as much as digits as its factorization.

25855867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672000, while the sum is 46.

The square root of 25855867 is about 5084.8664682566. The cubic root of 25855867 is about 295.7011646503.

The spelling of 25855867 in words is "twenty-five million, eight hundred fifty-five thousand, eight hundred sixty-seven".