720725051 has 2 divisors, whose sum is σ = 720725052. Its totient is φ = 720725050.

The previous prime is 720725041. The next prime is 720725141. The reversal of 720725051 is 150527027.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-720725051 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (720725011) 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, 360362525 + 360362526.

It is an arithmetic number, because the mean of its divisors is an integer number (360362526).

Almost surely, 2^720725051 is an apocalyptic number.

720725051 is a deficient number, since it is larger than the sum of its proper divisors (1).

720725051 is an equidigital number, since it uses as much as digits as its factorization.

720725051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4900, while the sum is 29.

The square root of 720725051 is about 26846.3228580750. The cubic root of 720725051 is about 896.5817045820.

The spelling of 720725051 in words is "seven hundred twenty million, seven hundred twenty-five thousand, fifty-one".