722525228 has 24 divisors (see below), whose sum is σ = 1344672000. Its totient is φ = 338519808.

The previous prime is 722525213. The next prime is 722525239. The reversal of 722525228 is 822525227.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7628 + ... + 38771.

It is an arithmetic number, because the mean of its divisors is an integer number (56028000).

Almost surely, 2^722525228 is an apocalyptic number.

It is an amenable number.

722525228 is a deficient number, since it is larger than the sum of its proper divisors (622146772).

722525228 is a wasteful number, since it uses less digits than its factorization.

722525228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46649 (or 46647 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 722525228 is about 26879.8293893395. The cubic root of 722525228 is about 897.3275571272.

Subtracting 722525228 from its reverse (822525227), we obtain a palindrome (99999999).

The spelling of 722525228 in words is "seven hundred twenty-two million, five hundred twenty-five thousand, two hundred twenty-eight".