25369171231 has 2 divisors, whose sum is σ = 25369171232. Its totient is φ = 25369171230.

The previous prime is 25369171207. The next prime is 25369171273. The reversal of 25369171231 is 13217196352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25369171231 - 2⁹ = 25369170719 is a prime.

It is a super-2 number, since 2×25369171231² (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 (25369171831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12684585615 + 12684585616.

It is an arithmetic number, because the mean of its divisors is an integer number (12684585616).

Almost surely, 2^25369171231 is an apocalyptic number.

25369171231 is a deficient number, since it is larger than the sum of its proper divisors (1).

25369171231 is an equidigital number, since it uses as much as digits as its factorization.

25369171231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The spelling of 25369171231 in words is "twenty-five billion, three hundred sixty-nine million, one hundred seventy-one thousand, two hundred thirty-one".