25379591 has 2 divisors, whose sum is σ = 25379592. Its totient is φ = 25379590.

The previous prime is 25379581. The next prime is 25379609. The reversal of 25379591 is 19597352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25379591 - 2¹⁴ = 25363207 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 (25379531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12689795 + 12689796.

It is an arithmetic number, because the mean of its divisors is an integer number (12689796).

Almost surely, 2^25379591 is an apocalyptic number.

25379591 is a deficient number, since it is larger than the sum of its proper divisors (1).

25379591 is an equidigital number, since it uses as much as digits as its factorization.

25379591 is an evil number, because the sum of its binary digits is even.

The product of its digits is 85050, while the sum is 41.

The square root of 25379591 is about 5037.8160943012. The cubic root of 25379591 is about 293.8742539982.

The spelling of 25379591 in words is "twenty-five million, three hundred seventy-nine thousand, five hundred ninety-one".