25711217608127 has 2 divisors, whose sum is σ = 25711217608128. Its totient is φ = 25711217608126.

The previous prime is 25711217608117. The next prime is 25711217608187. The reversal of 25711217608127 is 72180671211752.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25711217608127 - 2⁸ = 25711217607871 is a prime.

It is a super-2 number, since 2×25711217608127² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25711217608117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12855608804063 + 12855608804064.

It is an arithmetic number, because the mean of its divisors is an integer number (12855608804064).

Almost surely, 2^{25711217608127} is an apocalyptic number.

25711217608127 is a deficient number, since it is larger than the sum of its proper divisors (1).

25711217608127 is an equidigital number, since it uses as much as digits as its factorization.

25711217608127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 658560, while the sum is 50.

Adding to 25711217608127 its reverse (72180671211752), we get a palindrome (97891888819879).

The spelling of 25711217608127 in words is "twenty-five trillion, seven hundred eleven billion, two hundred seventeen million, six hundred eight thousand, one hundred twenty-seven".