12545256866 has 16 divisors (see below), whose sum is σ = 19010012256. Its totient is φ = 6208850976.

The previous prime is 12545256851. The next prime is 12545256877. The reversal of 12545256866 is 66865254521.

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, 29105 + ... + 161051.

It is an arithmetic number, because the mean of its divisors is an integer number (1188125766).

Almost surely, 2^12545256866 is an apocalyptic number.

12545256866 is a deficient number, since it is larger than the sum of its proper divisors (6464755390).

12545256866 is a wasteful number, since it uses less digits than its factorization.

12545256866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132433.

The product of its digits is 3456000, while the sum is 50.

The spelling of 12545256866 in words is "twelve billion, five hundred forty-five million, two hundred fifty-six thousand, eight hundred sixty-six".