222125000 has 56 divisors (see below), whose sum is σ = 520891770. Its totient is φ = 88800000.

The previous prime is 222124997. The next prime is 222125039. The reversal of 222125000 is 521222.

It can be written as a sum of positive squares in 7 ways, for example, as 117635716 + 104489284 = 10846^2 + 10222^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 124112 + ... + 125888.

Almost surely, 2^222125000 is an apocalyptic number.

222125000 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 222125000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260445885).

222125000 is an abundant number, since it is smaller than the sum of its proper divisors (298766770).

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

222125000 is an frugal number, since it uses more digits than its factorization.

222125000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813 (or 1784 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 222125000 is about 14903.8585607889. The cubic root of 222125000 is about 605.6185191414.

Adding to 222125000 its reverse (521222), we get a palindrome (222646222).

The spelling of 222125000 in words is "two hundred twenty-two million, one hundred twenty-five thousand".