320025032009 has 2 divisors, whose sum is σ = 320025032010. Its totient is φ = 320025032008.

The previous prime is 320025031987. The next prime is 320025032017. The reversal of 320025032009 is 900230520023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314177065225 + 5847966784 = 560515^2 + 76472^2 .

It is a cyclic number.

It is not a de Polignac number, because 320025032009 - 2²⁴ = 320008254793 is a prime.

It is a super-2 number, since 2×320025032009² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (320025032099) 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, 160012516004 + 160012516005.

It is an arithmetic number, because the mean of its divisors is an integer number (160012516005).

Almost surely, 2^320025032009 is an apocalyptic number.

It is an amenable number.

320025032009 is a deficient number, since it is larger than the sum of its proper divisors (1).

320025032009 is an equidigital number, since it uses as much as digits as its factorization.

320025032009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 26.

The spelling of 320025032009 in words is "three hundred twenty billion, twenty-five million, thirty-two thousand, nine".