25417591 has 2 divisors, whose sum is σ = 25417592. Its totient is φ = 25417590.

The previous prime is 25417583. The next prime is 25417603. The reversal of 25417591 is 19571452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25417591 - 2³ = 25417583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25417571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12708795 + 12708796.

It is an arithmetic number, because the mean of its divisors is an integer number (12708796).

Almost surely, 2^25417591 is an apocalyptic number.

25417591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25417591 is an equidigital number, since it uses as much as digits as its factorization.

25417591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 34.

The square root of 25417591 is about 5041.5861591368. The cubic root of 25417591 is about 294.0208501726.

The spelling of 25417591 in words is "twenty-five million, four hundred seventeen thousand, five hundred ninety-one".