25912146761 has 2 divisors, whose sum is σ = 25912146762. Its totient is φ = 25912146760.

The previous prime is 25912146749. The next prime is 25912146763. The reversal of 25912146761 is 16764121952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22690903225 + 3221243536 = 150635^2 + 56756^2 .

It is a cyclic number.

It is not a de Polignac number, because 25912146761 - 2¹⁰ = 25912145737 is a prime.

It is a super-2 number, since 2×25912146761² (a number of 22 digits) contains 22 as substring.

Together with 25912146763, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (25912146763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12956073380 + 12956073381.

It is an arithmetic number, because the mean of its divisors is an integer number (12956073381).

Almost surely, 2^25912146761 is an apocalyptic number.

It is an amenable number.

25912146761 is a deficient number, since it is larger than the sum of its proper divisors (1).

25912146761 is an equidigital number, since it uses as much as digits as its factorization.

25912146761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 44.

The spelling of 25912146761 in words is "twenty-five billion, nine hundred twelve million, one hundred forty-six thousand, seven hundred sixty-one".