6464838125 has 10 divisors (see below), whose sum is σ = 8078462502. Its totient is φ = 5171870000.

The previous prime is 6464838043. The next prime is 6464838167. The reversal of 6464838125 is 5218384646.

6464838125 is digitally balanced in base 3, 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 5 ways, for example, as 2566334281 + 3898503844 = 50659^2 + 62438^2 .

It is not a de Polignac number, because 6464838125 - 2¹² = 6464834029 is a prime.

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 6464838125.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5171246 + ... + 5172495.

Almost surely, 2^6464838125 is an apocalyptic number.

It is an amenable number.

6464838125 is a deficient number, since it is larger than the sum of its proper divisors (1613624377).

6464838125 is an equidigital number, since it uses as much as digits as its factorization.

6464838125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10343761 (or 10343746 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 47.

The square root of 6464838125 is about 80404.2170846778. The cubic root of 6464838125 is about 1862.8843102876.

The spelling of 6464838125 in words is "six billion, four hundred sixty-four million, eight hundred thirty-eight thousand, one hundred twenty-five".