722772500 has 30 divisors (see below), whose sum is σ = 1580564370. Its totient is φ = 289108000.

The previous prime is 722772473. The next prime is 722772517. The reversal of 722772500 is 5277227.

It can be written as a sum of positive squares in 5 ways, for example, as 261210244 + 461562256 = 16162^2 + 21484^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 142055 + ... + 147054.

It is an arithmetic number, because the mean of its divisors is an integer number (52685479).

Almost surely, 2^722772500 is an apocalyptic number.

It is an amenable number.

722772500 is an abundant number, since it is smaller than the sum of its proper divisors (857791870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722772500 is a wasteful number, since it uses less digits than its factorization.

722772500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289133 (or 289116 counting only the distinct ones).

The product of its (nonzero) digits is 13720, while the sum is 32.

The square root of 722772500 is about 26884.4285786401. The cubic root of 722772500 is about 897.4299104956.

The spelling of 722772500 in words is "seven hundred twenty-two million, seven hundred seventy-two thousand, five hundred".