325662509 has 2 divisors, whose sum is σ = 325662510. Its totient is φ = 325662508.

The previous prime is 325662487. The next prime is 325662511. The reversal of 325662509 is 905266523.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310816900 + 14845609 = 17630^2 + 3853^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-325662509 is a prime.

Together with 325662511, 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 (325662539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162831254 + 162831255.

It is an arithmetic number, because the mean of its divisors is an integer number (162831255).

Almost surely, 2^325662509 is an apocalyptic number.

It is an amenable number.

325662509 is a deficient number, since it is larger than the sum of its proper divisors (1).

325662509 is an equidigital number, since it uses as much as digits as its factorization.

325662509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 38.

The square root of 325662509 is about 18046.1217163135. The cubic root of 325662509 is about 688.0012936304.

The spelling of 325662509 in words is "three hundred twenty-five million, six hundred sixty-two thousand, five hundred nine".