25160356266481 has 2 divisors, whose sum is σ = 25160356266482. Its totient is φ = 25160356266480.

The previous prime is 25160356266403. The next prime is 25160356266509. The reversal of 25160356266481 is 18466265306152.

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., 25061197405456 + 99158861025 = 5006116^2 + 314895^2 .

It is a cyclic number.

It is not a de Polignac number, because 25160356266481 - 2²⁹ = 25159819395569 is a prime.

It is a super-2 number, since 2×25160356266481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25160356266581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12580178133240 + 12580178133241.

It is an arithmetic number, because the mean of its divisors is an integer number (12580178133241).

Almost surely, 2^{25160356266481} is an apocalyptic number.

It is an amenable number.

25160356266481 is a deficient number, since it is larger than the sum of its proper divisors (1).

25160356266481 is an equidigital number, since it uses as much as digits as its factorization.

25160356266481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12441600, while the sum is 55.

The spelling of 25160356266481 in words is "twenty-five trillion, one hundred sixty billion, three hundred fifty-six million, two hundred sixty-six thousand, four hundred eighty-one".