722325209 has 4 divisors (see below), whose sum is σ = 726756816. Its totient is φ = 717893604.

The previous prime is 722325199. The next prime is 722325229. The reversal of 722325209 is 902523227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722325209 - 2⁴ = 722325193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722325229) 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 in 3 ways as a sum of consecutive naturals, for example, 2215559 + ... + 2215884.

It is an arithmetic number, because the mean of its divisors is an integer number (181689204).

Almost surely, 2^722325209 is an apocalyptic number.

It is an amenable number.

722325209 is a deficient number, since it is larger than the sum of its proper divisors (4431607).

722325209 is a wasteful number, since it uses less digits than its factorization.

722325209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4431606.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 722325209 is about 26876.1085166733. The cubic root of 722325209 is about 897.2447461200.

The spelling of 722325209 in words is "seven hundred twenty-two million, three hundred twenty-five thousand, two hundred nine".