8125039321 has 27 divisors (see below), whose sum is σ = 9631819701. Its totient is φ = 6833978424.

The previous prime is 8125039297. The next prime is 8125039379. The reversal of 8125039321 is 1239305218.

The square root of 8125039321 is 90139.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 8125039321 - 2⁵ = 8125039289 is a prime.

It is a super-2 number, since 2×8125039321² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8125039921) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 49846786 + ... + 49846948.

It is an arithmetic number, because the mean of its divisors is an integer number (356734063).

Almost surely, 2^8125039321 is an apocalyptic number.

8125039321 is the 90139-th square number.

8125039321 is the 45070-th centered octagonal number.

It is an amenable number.

8125039321 is a deficient number, since it is larger than the sum of its proper divisors (1506780380).

8125039321 is an frugal number, since it uses more digits than its factorization.

8125039321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The cubic root of 8125039321 is about 2010.3661223448.

The spelling of 8125039321 in words is "eight billion, one hundred twenty-five million, thirty-nine thousand, three hundred twenty-one".