722271625 has 8 divisors (see below), whose sum is σ = 901395144. Its totient is φ = 577817200.

The previous prime is 722271619. The next prime is 722271637. The reversal of 722271625 is 526172227.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 31843449 + 690428176 = 5643^2 + 26276^2 .

It is not a de Polignac number, because 722271625 - 2¹¹ = 722269577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2888962 + ... + 2889211.

It is an arithmetic number, because the mean of its divisors is an integer number (112674393).

Almost surely, 2^722271625 is an apocalyptic number.

It is an amenable number.

722271625 is a deficient number, since it is larger than the sum of its proper divisors (179123519).

722271625 is an equidigital number, since it uses as much as digits as its factorization.

722271625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778188 (or 5778178 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 722271625 is about 26875.1116276751. Note that the first 3 decimals coincide. The cubic root of 722271625 is about 897.2225589063. Note that the first 3 decimals are identical.

The spelling of 722271625 in words is "seven hundred twenty-two million, two hundred seventy-one thousand, six hundred twenty-five".