25668475693 has 8 divisors (see below), whose sum is σ = 29515373888. Its totient is φ = 21866570784.

The previous prime is 25668475681. The next prime is 25668475699. The reversal of 25668475693 is 39657486652.

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 25668475693 - 2³³ = 17078541101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25668475699) 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, 11247096 + ... + 11249377.

It is an arithmetic number, because the mean of its divisors is an integer number (3689421736).

Almost surely, 2^25668475693 is an apocalyptic number.

It is an amenable number.

25668475693 is a deficient number, since it is larger than the sum of its proper divisors (3846898195).

25668475693 is a wasteful number, since it uses less digits than its factorization.

25668475693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22496643.

The product of its digits is 65318400, while the sum is 61.

The spelling of 25668475693 in words is "twenty-five billion, six hundred sixty-eight million, four hundred seventy-five thousand, six hundred ninety-three".