222320525 has 48 divisors (see below), whose sum is σ = 331050240. Its totient is φ = 144883200.

The previous prime is 222320521. The next prime is 222320537. The reversal of 222320525 is 525023222.

It is a happy number.

It is not a de Polignac number, because 222320525 - 2² = 222320521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222320525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222320521) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 360017 + ... + 360633.

It is an arithmetic number, because the mean of its divisors is an integer number (6896880).

Almost surely, 2^222320525 is an apocalyptic number.

222320525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222320525 is a deficient number, since it is larger than the sum of its proper divisors (108729715).

222320525 is a wasteful number, since it uses less digits than its factorization.

222320525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 222320525 is about 14910.4166608449. The cubic root of 222320525 is about 605.7961651118.

Adding to 222320525 its reverse (525023222), we get a palindrome (747343747).

The spelling of 222320525 in words is "two hundred twenty-two million, three hundred twenty thousand, five hundred twenty-five".