6628439125 has 32 divisors (see below), whose sum is σ = 10313521920. Its totient is φ = 4132008000.

The previous prime is 6628439113. The next prime is 6628439137. The reversal of 6628439125 is 5219348266.

It is an interprime number because it is at equal distance from previous prime (6628439113) and next prime (6628439137).

It is a de Polignac number, because none of the positive numbers 2^k-6628439125 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 334710 + ... + 353959.

It is an arithmetic number, because the mean of its divisors is an integer number (322297560).

Almost surely, 2^6628439125 is an apocalyptic number.

It is an amenable number.

6628439125 is a deficient number, since it is larger than the sum of its proper divisors (3685082795).

6628439125 is a wasteful number, since it uses less digits than its factorization.

6628439125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688702 (or 688692 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 6628439125 is about 81415.2266164014. The cubic root of 6628439125 is about 1878.4678104823.

The spelling of 6628439125 in words is "six billion, six hundred twenty-eight million, four hundred thirty-nine thousand, one hundred twenty-five".