25922580641 has 2 divisors, whose sum is σ = 25922580642. Its totient is φ = 25922580640.

The previous prime is 25922580623. The next prime is 25922580647. The reversal of 25922580641 is 14608522952.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15655014400 + 10267566241 = 125120^2 + 101329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25922580641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25922580592 and 25922580601.

It is not a weakly prime, because it can be changed into another prime (25922580647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12961290320 + 12961290321.

It is an arithmetic number, because the mean of its divisors is an integer number (12961290321).

Almost surely, 2^25922580641 is an apocalyptic number.

It is an amenable number.

25922580641 is a deficient number, since it is larger than the sum of its proper divisors (1).

25922580641 is an equidigital number, since it uses as much as digits as its factorization.

25922580641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 25922580641 in words is "twenty-five billion, nine hundred twenty-two million, five hundred eighty thousand, six hundred forty-one".