325287509 has 2 divisors, whose sum is σ = 325287510. Its totient is φ = 325287508.

The previous prime is 325287499. The next prime is 325287539. The reversal of 325287509 is 905782523.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324900625 + 386884 = 18025^2 + 622^2 .

It is a cyclic number.

It is not a de Polignac number, because 325287509 - 2⁸ = 325287253 is a prime.

It is a super-2 number, since 2×325287509² = 211623927022850162, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (325287539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162643754 + 162643755.

It is an arithmetic number, because the mean of its divisors is an integer number (162643755).

Almost surely, 2^325287509 is an apocalyptic number.

It is an amenable number.

325287509 is a deficient number, since it is larger than the sum of its proper divisors (1).

325287509 is an equidigital number, since it uses as much as digits as its factorization.

325287509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 325287509 is about 18035.7286794851. The cubic root of 325287509 is about 687.7371146409.

The spelling of 325287509 in words is "three hundred twenty-five million, two hundred eighty-seven thousand, five hundred nine".