25616567 has 2 divisors, whose sum is σ = 25616568. Its totient is φ = 25616566.

The previous prime is 25616533. The next prime is 25616573. The reversal of 25616567 is 76561652.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25616567 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 25616567.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25616597) 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, 12808283 + 12808284.

It is an arithmetic number, because the mean of its divisors is an integer number (12808284).

Almost surely, 2^25616567 is an apocalyptic number.

25616567 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616567 is an equidigital number, since it uses as much as digits as its factorization.

25616567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 25616567 is about 5061.2811619194. The cubic root of 25616567 is about 294.7860825878.

The spelling of 25616567 in words is "twenty-five million, six hundred sixteen thousand, five hundred sixty-seven".