25553445131 has 2 divisors, whose sum is σ = 25553445132. Its totient is φ = 25553445130.

The previous prime is 25553445079. The next prime is 25553445187. The reversal of 25553445131 is 13154435552.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25553445131 is a prime.

It is a super-2 number, since 2×25553445131² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25553445031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776722565 + 12776722566.

It is an arithmetic number, because the mean of its divisors is an integer number (12776722566).

Almost surely, 2^25553445131 is an apocalyptic number.

25553445131 is a deficient number, since it is larger than the sum of its proper divisors (1).

25553445131 is an equidigital number, since it uses as much as digits as its factorization.

25553445131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180000, while the sum is 38.

The spelling of 25553445131 in words is "twenty-five billion, five hundred fifty-three million, four hundred forty-five thousand, one hundred thirty-one".