6390425020 has 96 divisors (see below), whose sum is σ = 15474493440. Its totient is φ = 2171473920.

The previous prime is 6390424991. The next prime is 6390425023. The reversal of 6390425020 is 205240936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6390425023) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 11074972 + ... + 11075548.

It is an arithmetic number, because the mean of its divisors is an integer number (161192640).

Almost surely, 2^6390425020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6390425020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7737246720).

6390425020 is an abundant number, since it is smaller than the sum of its proper divisors (9084068420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6390425020 is a wasteful number, since it uses less digits than its factorization.

6390425020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 6390425020 is about 79940.1339753693. The cubic root of 6390425020 is about 1855.7091729798.

Adding to 6390425020 its reverse (205240936), we get a palindrome (6595665956).

The spelling of 6390425020 in words is "six billion, three hundred ninety million, four hundred twenty-five thousand, twenty".