8325509 has 2 divisors, whose sum is σ = 8325510. Its totient is φ = 8325508.

The previous prime is 8325503. The next prime is 8325511. The reversal of 8325509 is 9055238.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5536609 + 2788900 = 2353^2 + 1670^2 .

It is a cyclic number.

It is not a de Polignac number, because 8325509 - 2¹⁶ = 8259973 is a prime.

Together with 8325511, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8325503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4162754 + 4162755.

It is an arithmetic number, because the mean of its divisors is an integer number (4162755).

Almost surely, 2^8325509 is an apocalyptic number.

It is an amenable number.

8325509 is a deficient number, since it is larger than the sum of its proper divisors (1).

8325509 is an equidigital number, since it uses as much as digits as its factorization.

8325509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 8325509 is about 2885.3958134024. The cubic root of 8325509 is about 202.6765944155.

The spelling of 8325509 in words is "eight million, three hundred twenty-five thousand, five hundred nine".