25616597 has 2 divisors, whose sum is σ = 25616598. Its totient is φ = 25616596.

The previous prime is 25616573. The next prime is 25616609. The reversal of 25616597 is 79561652.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18267076 + 7349521 = 4274^2 + 2711^2 .

It is a cyclic number.

It is not a de Polignac number, because 25616597 - 2⁶ = 25616533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25616567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12808298 + 12808299.

It is an arithmetic number, because the mean of its divisors is an integer number (12808299).

Almost surely, 2^25616597 is an apocalyptic number.

It is an amenable number.

25616597 is a deficient number, since it is larger than the sum of its proper divisors (1).

25616597 is an equidigital number, since it uses as much as digits as its factorization.

25616597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 41.

The square root of 25616597 is about 5061.2841255950. The cubic root of 25616597 is about 294.7861976641.

The spelling of 25616597 in words is "twenty-five million, six hundred sixteen thousand, five hundred ninety-seven".