649845725512 has 32 divisors (see below), whose sum is σ = 1241611244280. Its totient is φ = 318750981120.

The previous prime is 649845725479. The next prime is 649845725587. The reversal of 649845725512 is 215527548946.

649845725512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 617491069636 + 32354655876 = 785806^2 + 179874^2 .

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, 3319312 + ... + 3509632.

Almost surely, 2^649845725512 is an apocalyptic number.

It is an amenable number.

649845725512 is a deficient number, since it is larger than the sum of its proper divisors (591765518768).

649845725512 is a wasteful number, since it uses less digits than its factorization.

649845725512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198433 (or 198429 counting only the distinct ones).

The product of its digits is 24192000, while the sum is 58.

The spelling of 649845725512 in words is "six hundred forty-nine billion, eight hundred forty-five million, seven hundred twenty-five thousand, five hundred twelve".