25671357260117 has 4 divisors (see below), whose sum is σ = 26092199182476. Its totient is φ = 25250515337760.

The previous prime is 25671357260077. The next prime is 25671357260147. The reversal of 25671357260117 is 71106275317652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9702390197956 + 15968967062161 = 3114866^2 + 3996119^2 .

It is a cyclic number.

It is not a de Polignac number, because 25671357260117 - 2³⁰ = 25670283518293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25671357260147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210420961088 + ... + 210420961209.

It is an arithmetic number, because the mean of its divisors is an integer number (6523049795619).

Almost surely, 2^{25671357260117} is an apocalyptic number.

It is an amenable number.

25671357260117 is a deficient number, since it is larger than the sum of its proper divisors (420841922359).

25671357260117 is an equidigital number, since it uses as much as digits as its factorization.

25671357260117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420841922358.

The product of its (nonzero) digits is 3704400, while the sum is 53.

The spelling of 25671357260117 in words is "twenty-five trillion, six hundred seventy-one billion, three hundred fifty-seven million, two hundred sixty thousand, one hundred seventeen".