25131959 has 2 divisors, whose sum is σ = 25131960. Its totient is φ = 25131958.

The previous prime is 25131949. The next prime is 25131961. The reversal of 25131959 is 95913152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25131959 - 2⁴ = 25131943 is a prime.

Together with 25131961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25131919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12565979 + 12565980.

It is an arithmetic number, because the mean of its divisors is an integer number (12565980).

Almost surely, 2^25131959 is an apocalyptic number.

25131959 is a deficient number, since it is larger than the sum of its proper divisors (1).

25131959 is an equidigital number, since it uses as much as digits as its factorization.

25131959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12150, while the sum is 35.

The square root of 25131959 is about 5013.1785326278. The cubic root of 25131959 is about 292.9153385608.

The spelling of 25131959 in words is "twenty-five million, one hundred thirty-one thousand, nine hundred fifty-nine".