25929383881 has 2 divisors, whose sum is σ = 25929383882. Its totient is φ = 25929383880.

The previous prime is 25929383869. The next prime is 25929383929. The reversal of 25929383881 is 18838392952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16652612025 + 9276771856 = 129045^2 + 96316^2 .

It is a cyclic number.

It is not a de Polignac number, because 25929383881 - 2²⁷ = 25795166153 is a prime.

It is a super-2 number, since 2×25929383881² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (25929383281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12964691940 + 12964691941.

It is an arithmetic number, because the mean of its divisors is an integer number (12964691941).

Almost surely, 2^25929383881 is an apocalyptic number.

It is an amenable number.

25929383881 is a deficient number, since it is larger than the sum of its proper divisors (1).

25929383881 is an equidigital number, since it uses as much as digits as its factorization.

25929383881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 58.

The spelling of 25929383881 in words is "twenty-five billion, nine hundred twenty-nine million, three hundred eighty-three thousand, eight hundred eighty-one".