25345591 has 2 divisors, whose sum is σ = 25345592. Its totient is φ = 25345590.

The previous prime is 25345583. The next prime is 25345603. The reversal of 25345591 is 19554352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25345591 - 2³ = 25345583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25345571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12672795 + 12672796.

It is an arithmetic number, because the mean of its divisors is an integer number (12672796).

Almost surely, 2^25345591 is an apocalyptic number.

25345591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25345591 is an equidigital number, since it uses as much as digits as its factorization.

25345591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27000, while the sum is 34.

The square root of 25345591 is about 5034.4404852972. The cubic root of 25345591 is about 293.7429649138.

The spelling of 25345591 in words is "twenty-five million, three hundred forty-five thousand, five hundred ninety-one".