2566251668 has 24 divisors (see below), whose sum is σ = 4535903232. Its totient is φ = 1270330304.

The previous prime is 2566251629. The next prime is 2566251719. The reversal of 2566251668 is 8661526652.

2566251668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203771 + ... + 215997.

It is an arithmetic number, because the mean of its divisors is an integer number (188995968).

Almost surely, 2^2566251668 is an apocalyptic number.

It is an amenable number.

2566251668 is a deficient number, since it is larger than the sum of its proper divisors (1969651564).

2566251668 is a wasteful number, since it uses less digits than its factorization.

2566251668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12751 (or 12749 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 47.

The square root of 2566251668 is about 50658.1846101891. The cubic root of 2566251668 is about 1369.0934148063.

The spelling of 2566251668 in words is "two billion, five hundred sixty-six million, two hundred fifty-one thousand, six hundred sixty-eight".