722255 has 4 divisors (see below), whose sum is σ = 866712. Its totient is φ = 577800.

The previous prime is 722243. The next prime is 722257. The reversal of 722255 is 552227.

722255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 722255 - 2¹⁴ = 705871 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 722255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722257) 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, 72221 + ... + 72230.

It is an arithmetic number, because the mean of its divisors is an integer number (216678).

2⁷²²²⁵⁵ is an apocalyptic number.

722255 is a deficient number, since it is larger than the sum of its proper divisors (144457).

722255 is a wasteful number, since it uses less digits than its factorization.

722255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144456.

The product of its digits is 1400, while the sum is 23.

The square root of 722255 is about 849.8558701333. The cubic root of 722255 is about 89.7215674867.

The spelling of 722255 in words is "seven hundred twenty-two thousand, two hundred fifty-five".