25927591 has 2 divisors, whose sum is σ = 25927592. Its totient is φ = 25927590.

The previous prime is 25927579. The next prime is 25927619. The reversal of 25927591 is 19572952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25927591 - 2¹⁵ = 25894823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25327591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12963795 + 12963796.

It is an arithmetic number, because the mean of its divisors is an integer number (12963796).

Almost surely, 2^25927591 is an apocalyptic number.

25927591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25927591 is an equidigital number, since it uses as much as digits as its factorization.

25927591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56700, while the sum is 40.

The square root of 25927591 is about 5091.9142765761. The cubic root of 25927591 is about 295.9743365564.

The spelling of 25927591 in words is "twenty-five million, nine hundred twenty-seven thousand, five hundred ninety-one".