25171253322869 has 2 divisors, whose sum is σ = 25171253322870. Its totient is φ = 25171253322868.

The previous prime is 25171253322847. The next prime is 25171253322959. The reversal of 25171253322869 is 96822335217152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16702792479025 + 8468460843844 = 4086905^2 + 2910062^2 .

It is a cyclic number.

It is not a de Polignac number, because 25171253322869 - 2⁸ = 25171253322613 is a prime.

It is a super-2 number, since 2×25171253322869² (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 (25171253321869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12585626661434 + 12585626661435.

It is an arithmetic number, because the mean of its divisors is an integer number (12585626661435).

Almost surely, 2^{25171253322869} is an apocalyptic number.

It is an amenable number.

25171253322869 is a deficient number, since it is larger than the sum of its proper divisors (1).

25171253322869 is an equidigital number, since it uses as much as digits as its factorization.

25171253322869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 56.

The spelling of 25171253322869 in words is "twenty-five trillion, one hundred seventy-one billion, two hundred fifty-three million, three hundred twenty-two thousand, eight hundred sixty-nine".