25677172271 has 2 divisors, whose sum is σ = 25677172272. Its totient is φ = 25677172270.

The previous prime is 25677172219. The next prime is 25677172277. The reversal of 25677172271 is 17227177652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 25677172271 - 2⁶ = 25677172207 is a prime.

It is a super-2 number, since 2×25677172271² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25677172277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12838586135 + 12838586136.

It is an arithmetic number, because the mean of its divisors is an integer number (12838586136).

Almost surely, 2^25677172271 is an apocalyptic number.

25677172271 is a deficient number, since it is larger than the sum of its proper divisors (1).

25677172271 is an equidigital number, since it uses as much as digits as its factorization.

25677172271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576240, while the sum is 47.

The spelling of 25677172271 in words is "twenty-five billion, six hundred seventy-seven million, one hundred seventy-two thousand, two hundred seventy-one".