25996567 has 2 divisors, whose sum is σ = 25996568. Its totient is φ = 25996566.

The previous prime is 25996561. The next prime is 25996571. The reversal of 25996567 is 76569952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25996567 - 2³ = 25996559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25996567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25996561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12998283 + 12998284.

It is an arithmetic number, because the mean of its divisors is an integer number (12998284).

Almost surely, 2^25996567 is an apocalyptic number.

25996567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25996567 is an equidigital number, since it uses as much as digits as its factorization.

25996567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1020600, while the sum is 49.

The square root of 25996567 is about 5098.6828691339. The cubic root of 25996567 is about 296.2365674860.

The spelling of 25996567 in words is "twenty-five million, nine hundred ninety-six thousand, five hundred sixty-seven".