6438888825 has 24 divisors (see below), whose sum is σ = 10795576896. Its totient is φ = 3385704000.

The previous prime is 6438888791. The next prime is 6438888877. The reversal of 6438888825 is 5288888346.

It is not a de Polignac number, because 6438888825 - 2²³ = 6430500217 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599266 + ... + 609915.

It is an arithmetic number, because the mean of its divisors is an integer number (449815704).

Almost surely, 2^6438888825 is an apocalyptic number.

It is an amenable number.

6438888825 is a deficient number, since it is larger than the sum of its proper divisors (4356688071).

6438888825 is a wasteful number, since it uses less digits than its factorization.

6438888825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209265 (or 1209260 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 60.

The square root of 6438888825 is about 80242.6870499736. The cubic root of 6438888825 is about 1860.3884825621.

The spelling of 6438888825 in words is "six billion, four hundred thirty-eight million, eight hundred eighty-eight thousand, eight hundred twenty-five".