720225556 has 24 divisors (see below), whose sum is σ = 1331608320. Its totient is φ = 340294752.

The previous prime is 720225529. The next prime is 720225559. The reversal of 720225556 is 655522027.

720225556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720225559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60600 + ... + 71503.

It is an arithmetic number, because the mean of its divisors is an integer number (55483680).

Almost surely, 2^720225556 is an apocalyptic number.

It is an amenable number.

720225556 is a deficient number, since it is larger than the sum of its proper divisors (611382764).

720225556 is a wasteful number, since it uses less digits than its factorization.

720225556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132183 (or 132181 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 720225556 is about 26837.0183887853. The cubic root of 720225556 is about 896.3745328480.

The spelling of 720225556 in words is "seven hundred twenty million, two hundred twenty-five thousand, five hundred fifty-six".