222500 has 30 divisors (see below), whose sum is σ = 492030. Its totient is φ = 88000.

The previous prime is 222499. The next prime is 222511. The reversal of 222500 is 5222.

It can be written as a sum of positive squares in 5 ways, for example, as 123904 + 98596 = 352^2 + 314^2 .

It is a sliding number, since 222500 = 62500 + 160000 and 1/62500 + 1/160000 = 0.0000222500.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2456 + ... + 2544.

It is an arithmetic number, because the mean of its divisors is an integer number (16401).

2²²²⁵⁰⁰ is an apocalyptic number.

222500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246015).

222500 is an abundant number, since it is smaller than the sum of its proper divisors (269530).

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

222500 is an equidigital number, since it uses as much as digits as its factorization.

222500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 222500 is about 471.6990566028. The cubic root of 222500 is about 60.5959137053.

Adding to 222500 its reverse (5222), we get a palindrome (227722).

The spelling of 222500 in words is "two hundred twenty-two thousand, five hundred".