25749976793 has 2 divisors, whose sum is σ = 25749976794. Its totient is φ = 25749976792.

The previous prime is 25749976781. The next prime is 25749976829. The reversal of 25749976793 is 39767994752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25743560704 + 6416089 = 160448^2 + 2533^2 .

It is a cyclic number.

It is not a de Polignac number, because 25749976793 - 2¹⁴ = 25749960409 is a prime.

It is a super-2 number, since 2×25749976793² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25749976753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12874988396 + 12874988397.

It is an arithmetic number, because the mean of its divisors is an integer number (12874988397).

Almost surely, 2^25749976793 is an apocalyptic number.

It is an amenable number.

25749976793 is a deficient number, since it is larger than the sum of its proper divisors (1).

25749976793 is an equidigital number, since it uses as much as digits as its factorization.

25749976793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180033840, while the sum is 68.

The spelling of 25749976793 in words is "twenty-five billion, seven hundred forty-nine million, nine hundred seventy-six thousand, seven hundred ninety-three".