720725017 has 2 divisors, whose sum is σ = 720725018. Its totient is φ = 720725016.

The previous prime is 720725011. The next prime is 720725041. The reversal of 720725017 is 710527027.

720725017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600691081 + 120033936 = 24509^2 + 10956^2 .

It is a cyclic number.

It is not a de Polignac number, because 720725017 - 2³ = 720725009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 720725017.

It is not a weakly prime, because it can be changed into another prime (720725011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360362508 + 360362509.

It is an arithmetic number, because the mean of its divisors is an integer number (360362509).

Almost surely, 2^720725017 is an apocalyptic number.

It is an amenable number.

720725017 is a deficient number, since it is larger than the sum of its proper divisors (1).

720725017 is an equidigital number, since it uses as much as digits as its factorization.

720725017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6860, while the sum is 31.

The square root of 720725017 is about 26846.3222248412. The cubic root of 720725017 is about 896.5816904833.

The spelling of 720725017 in words is "seven hundred twenty million, seven hundred twenty-five thousand, seventeen".