25276591 has 2 divisors, whose sum is σ = 25276592. Its totient is φ = 25276590.

The previous prime is 25276583. The next prime is 25276597. The reversal of 25276591 is 19567252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25276591 - 2³ = 25276583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 25276591.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25276597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12638295 + 12638296.

It is an arithmetic number, because the mean of its divisors is an integer number (12638296).

Almost surely, 2^25276591 is an apocalyptic number.

25276591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25276591 is an equidigital number, since it uses as much as digits as its factorization.

25276591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 25276591 is about 5027.5830177134. The cubic root of 25276591 is about 293.4761639410.

The spelling of 25276591 in words is "twenty-five million, two hundred seventy-six thousand, five hundred ninety-one".