25912930931 has 2 divisors, whose sum is σ = 25912930932. Its totient is φ = 25912930930.

The previous prime is 25912930913. The next prime is 25912930937. The reversal of 25912930931 is 13903921952.

Together with previous prime (25912930913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25912930931 - 2³⁴ = 8733061747 is a prime.

It is a super-2 number, since 2×25912930931² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (25912930937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956465465 + 12956465466.

It is an arithmetic number, because the mean of its divisors is an integer number (12956465466).

Almost surely, 2^25912930931 is an apocalyptic number.

25912930931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25912930931 is an equidigital number, since it uses as much as digits as its factorization.

25912930931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 131220, while the sum is 44.

The spelling of 25912930931 in words is "twenty-five billion, nine hundred twelve million, nine hundred thirty thousand, nine hundred thirty-one".