25979159 has 2 divisors, whose sum is σ = 25979160. Its totient is φ = 25979158.

The previous prime is 25979141. The next prime is 25979171. The reversal of 25979159 is 95197952.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25979159 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 (25979059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12989579 + 12989580.

It is an arithmetic number, because the mean of its divisors is an integer number (12989580).

Almost surely, 2^25979159 is an apocalyptic number.

25979159 is a deficient number, since it is larger than the sum of its proper divisors (1).

25979159 is an equidigital number, since it uses as much as digits as its factorization.

25979159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 255150, while the sum is 47.

The square root of 25979159 is about 5096.9754757111. The cubic root of 25979159 is about 296.1704300654.

The spelling of 25979159 in words is "twenty-five million, nine hundred seventy-nine thousand, one hundred fifty-nine".