25660206652 has 12 divisors (see below), whose sum is σ = 45349969896. Its totient is φ = 12703072400.

The previous prime is 25660206647. The next prime is 25660206709.

25660206652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31757278 + ... + 31758085.

It is an arithmetic number, because the mean of its divisors is an integer number (3779164158).

Almost surely, 2^25660206652 is an apocalyptic number.

It is an amenable number.

25660206652 is a deficient number, since it is larger than the sum of its proper divisors (19689763244).

25660206652 is a wasteful number, since it uses less digits than its factorization.

25660206652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63515468 (or 63515466 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 25660206652 in words is "twenty-five billion, six hundred sixty million, two hundred six thousand, six hundred fifty-two".