25912701931 has 2 divisors, whose sum is σ = 25912701932. Its totient is φ = 25912701930.

The previous prime is 25912701917. The next prime is 25912701959. The reversal of 25912701931 is 13910721952.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25912701931 - 2³¹ = 23765218283 is a prime.

It is a super-2 number, since 2×25912701931² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25912711931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956350965 + 12956350966.

It is an arithmetic number, because the mean of its divisors is an integer number (12956350966).

Almost surely, 2^25912701931 is an apocalyptic number.

25912701931 is a deficient number, since it is larger than the sum of its proper divisors (1).

25912701931 is an equidigital number, since it uses as much as digits as its factorization.

25912701931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 40.

The spelling of 25912701931 in words is "twenty-five billion, nine hundred twelve million, seven hundred one thousand, nine hundred thirty-one".