6384742825 has 6 divisors (see below), whose sum is σ = 7917081134. Its totient is φ = 5107794240.

The previous prime is 6384742781. The next prime is 6384742849. The reversal of 6384742825 is 5282474836.

It can be written as a sum of positive squares in 3 ways, for example, as 1190802064 + 5193940761 = 34508^2 + 72069^2 .

It is not a de Polignac number, because 6384742825 - 2⁷ = 6384742697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 127694832 + ... + 127694881.

Almost surely, 2^6384742825 is an apocalyptic number.

It is an amenable number.

6384742825 is a deficient number, since it is larger than the sum of its proper divisors (1532338309).

6384742825 is a wasteful number, since it uses less digits than its factorization.

6384742825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255389723 (or 255389718 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 49.

The square root of 6384742825 is about 79904.5857570140. The cubic root of 6384742825 is about 1855.1589942258.

The spelling of 6384742825 in words is "six billion, three hundred eighty-four million, seven hundred forty-two thousand, eight hundred twenty-five".