6643125062257 has 16 divisors (see below), whose sum is σ = 7026134556672. Its totient is φ = 6271551383760.

The previous prime is 6643125062251. The next prime is 6643125062297. The reversal of 6643125062257 is 7522605213466.

It is a cyclic number.

It is not a de Polignac number, because 6643125062257 - 2³⁵ = 6608765323889 is a prime.

It is a super-2 number, since 2×6643125062257² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6643125062257.

It is not an unprimeable number, because it can be changed into a prime (6643125062251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6978523 + ... + 7873120.

It is an arithmetic number, because the mean of its divisors is an integer number (439133409792).

Almost surely, 2^{6643125062257} is an apocalyptic number.

It is an amenable number.

6643125062257 is a deficient number, since it is larger than the sum of its proper divisors (383009494415).

6643125062257 is a wasteful number, since it uses less digits than its factorization.

6643125062257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14852028.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 6643125062257 in words is "six trillion, six hundred forty-three billion, one hundred twenty-five million, sixty-two thousand, two hundred fifty-seven".