25660550117 has 8 divisors (see below), whose sum is σ = 25781771232. Its totient is φ = 25539401200.

The previous prime is 25660550099. The next prime is 25660550137. The reversal of 25660550117 is 71105506652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25660550117 - 2¹⁰ = 25660549093 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 (25660550137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776267 + ... + 808647.

It is an arithmetic number, because the mean of its divisors is an integer number (3222721404).

Almost surely, 2^25660550117 is an apocalyptic number.

It is an amenable number.

25660550117 is a deficient number, since it is larger than the sum of its proper divisors (121221115).

25660550117 is a wasteful number, since it uses less digits than its factorization.

25660550117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36099.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 25660550117 in words is "twenty-five billion, six hundred sixty million, five hundred fifty thousand, one hundred seventeen".