25685963902933 has 2 divisors, whose sum is σ = 25685963902934. Its totient is φ = 25685963902932.

The previous prime is 25685963902813. The next prime is 25685963903011. The reversal of 25685963902933 is 33920936958652.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24322818921489 + 1363144981444 = 4931817^2 + 1167538^2 .

It is a cyclic number.

It is not a de Polignac number, because 25685963902933 - 2⁹ = 25685963902421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25685963908933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12842981951466 + 12842981951467.

It is an arithmetic number, because the mean of its divisors is an integer number (12842981951467).

Almost surely, 2^{25685963902933} is an apocalyptic number.

It is an amenable number.

25685963902933 is a deficient number, since it is larger than the sum of its proper divisors (1).

25685963902933 is an equidigital number, since it uses as much as digits as its factorization.

25685963902933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 566870400, while the sum is 70.

The spelling of 25685963902933 in words is "twenty-five trillion, six hundred eighty-five billion, nine hundred sixty-three million, nine hundred two thousand, nine hundred thirty-three".