25660606652 has 12 divisors (see below), whose sum is σ = 44935557576. Its totient is φ = 12821875920.

The previous prime is 25660606649. The next prime is 25660606661.

25660606652 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2099999 + ... + 2112182.

It is an arithmetic number, because the mean of its divisors is an integer number (3744629798).

Almost surely, 2^25660606652 is an apocalyptic number.

It is an amenable number.

25660606652 is a deficient number, since it is larger than the sum of its proper divisors (19274950924).

25660606652 is a wasteful number, since it uses less digits than its factorization.

25660606652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213708 (or 4213706 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 25660606652 in words is "twenty-five billion, six hundred sixty million, six hundred six thousand, six hundred fifty-two".