25923321331321 has 2 divisors, whose sum is σ = 25923321331322. Its totient is φ = 25923321331320.

The previous prime is 25923321331307. The next prime is 25923321331459. The reversal of 25923321331321 is 12313312332952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16989564985600 + 8933756345721 = 4121840^2 + 2988939^2 .

It is a cyclic number.

It is not a de Polignac number, because 25923321331321 - 2²⁹ = 25922784460409 is a prime.

It is not a weakly prime, because it can be changed into another prime (25923321331121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12961660665660 + 12961660665661.

It is an arithmetic number, because the mean of its divisors is an integer number (12961660665661).

Almost surely, 2^{25923321331321} is an apocalyptic number.

It is an amenable number.

25923321331321 is a deficient number, since it is larger than the sum of its proper divisors (1).

25923321331321 is an equidigital number, since it uses as much as digits as its factorization.

25923321331321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 40.

The spelling of 25923321331321 in words is "twenty-five trillion, nine hundred twenty-three billion, three hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".