8125039320 has 128 divisors (see below), whose sum is σ = 24810589440. Its totient is φ = 2128273920.

The previous prime is 8125039297. The next prime is 8125039379. The reversal of 8125039320 is 239305218.

It is a Cunningham number, because it is equal to 90139²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1800507 + ... + 1805013.

It is an arithmetic number, because the mean of its divisors is an integer number (193832730).

Almost surely, 2^8125039320 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 8125039320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12405294720).

8125039320 is an abundant number, since it is smaller than the sum of its proper divisors (16685550120).

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

8125039320 is a wasteful number, since it uses less digits than its factorization.

8125039320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4785 (or 4781 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 8125039320 is about 90138.9999944530. Note that the first 5 decimals coincide. The cubic root of 8125039320 is about 2010.3661222624.

The spelling of 8125039320 in words is "eight billion, one hundred twenty-five million, thirty-nine thousand, three hundred twenty".