8125039289 has 2 divisors, whose sum is σ = 8125039290. Its totient is φ = 8125039288.

The previous prime is 8125039277. The next prime is 8125039297. The reversal of 8125039289 is 9829305218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8123957689 + 1081600 = 90133^2 + 1040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8125039289 is a prime.

It is not a weakly prime, because it can be changed into another prime (8125039259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4062519644 + 4062519645.

It is an arithmetic number, because the mean of its divisors is an integer number (4062519645).

Almost surely, 2^8125039289 is an apocalyptic number.

It is an amenable number.

8125039289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8125039289 is an equidigital number, since it uses as much as digits as its factorization.

8125039289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 8125039289 is about 90138.9998224964. Note that the first 3 decimals coincide. The cubic root of 8125039289 is about 2010.3661197056.

The spelling of 8125039289 in words is "eight billion, one hundred twenty-five million, thirty-nine thousand, two hundred eighty-nine".