25862079117689 has 2 divisors, whose sum is σ = 25862079117690. Its totient is φ = 25862079117688.

The previous prime is 25862079117671. The next prime is 25862079117697. The reversal of 25862079117689 is 98671197026852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17255383681600 + 8606695436089 = 4153960^2 + 2933717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25862079117689 is a prime.

It is a super-3 number, since 3×25862079117689³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (25862079117289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12931039558844 + 12931039558845.

It is an arithmetic number, because the mean of its divisors is an integer number (12931039558845).

Almost surely, 2^{25862079117689} is an apocalyptic number.

It is an amenable number.

25862079117689 is a deficient number, since it is larger than the sum of its proper divisors (1).

25862079117689 is an equidigital number, since it uses as much as digits as its factorization.

25862079117689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 182891520, while the sum is 71.

The spelling of 25862079117689 in words is "twenty-five trillion, eight hundred sixty-two billion, seventy-nine million, one hundred seventeen thousand, six hundred eighty-nine".