25901039831 has 2 divisors, whose sum is σ = 25901039832. Its totient is φ = 25901039830.

The previous prime is 25901039797. The next prime is 25901039861. The reversal of 25901039831 is 13893010952.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25901039831 - 2³⁰ = 24827298007 is a prime.

It is a super-2 number, since 2×25901039831² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25901039861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12950519915 + 12950519916.

It is an arithmetic number, because the mean of its divisors is an integer number (12950519916).

Almost surely, 2^25901039831 is an apocalyptic number.

25901039831 is a deficient number, since it is larger than the sum of its proper divisors (1).

25901039831 is an equidigital number, since it uses as much as digits as its factorization.

25901039831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 41.

The spelling of 25901039831 in words is "twenty-five billion, nine hundred one million, thirty-nine thousand, eight hundred thirty-one".