8325543509 has 2 divisors, whose sum is σ = 8325543510. Its totient is φ = 8325543508.

The previous prime is 8325543487. The next prime is 8325543521. The reversal of 8325543509 is 9053455238.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7652400484 + 673143025 = 87478^2 + 25945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8325543509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8325543509.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8325543559) 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 as a sum of consecutive naturals, namely, 4162771754 + 4162771755.

It is an arithmetic number, because the mean of its divisors is an integer number (4162771755).

Almost surely, 2^8325543509 is an apocalyptic number.

It is an amenable number.

8325543509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8325543509 is an equidigital number, since it uses as much as digits as its factorization.

8325543509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 8325543509 is about 91244.4163168355. The cubic root of 8325543509 is about 2026.7687444467.

The spelling of 8325543509 in words is "eight billion, three hundred twenty-five million, five hundred forty-three thousand, five hundred nine".