720725018 has 8 divisors (see below), whose sum is σ = 1164248148. Its totient is φ = 332642304.

The previous prime is 720725017. The next prime is 720725041. The reversal of 720725018 is 810527027.

720725018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 627853249 + 92871769 = 25057^2 + 9637^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×720725018² = 1038889103142200648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720725011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13860071 + ... + 13860122.

Almost surely, 2^720725018 is an apocalyptic number.

720725018 is a deficient number, since it is larger than the sum of its proper divisors (443523130).

720725018 is a wasteful number, since it uses less digits than its factorization.

720725018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27720208.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 720725018 is about 26846.3222434657. The cubic root of 720725018 is about 896.5816908980.

The spelling of 720725018 in words is "seven hundred twenty million, seven hundred twenty-five thousand, eighteen".