25872145441 has 2 divisors, whose sum is σ = 25872145442. Its totient is φ = 25872145440.

The previous prime is 25872145427. The next prime is 25872145451. The reversal of 25872145441 is 14454127852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23133193216 + 2738952225 = 152096^2 + 52335^2 .

It is a cyclic number.

It is not a de Polignac number, because 25872145441 - 2²⁹ = 25335274529 is a prime.

It is not a weakly prime, because it can be changed into another prime (25872145451) 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, 12936072720 + 12936072721.

It is an arithmetic number, because the mean of its divisors is an integer number (12936072721).

Almost surely, 2^25872145441 is an apocalyptic number.

It is an amenable number.

25872145441 is a deficient number, since it is larger than the sum of its proper divisors (1).

25872145441 is an equidigital number, since it uses as much as digits as its factorization.

25872145441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 358400, while the sum is 43.

The spelling of 25872145441 in words is "twenty-five billion, eight hundred seventy-two million, one hundred forty-five thousand, four hundred forty-one".