222665125 has 8 divisors (see below), whose sum is σ = 277886232. Its totient is φ = 178132000.

The previous prime is 222665101. The next prime is 222665129. The reversal of 222665125 is 521566222.

It is a happy number.

222665125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 46253601 + 176411524 = 6801^2 + 13282^2 .

It is not a de Polignac number, because 222665125 - 2²⁵ = 189110693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222665129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 890536 + ... + 890785.

It is an arithmetic number, because the mean of its divisors is an integer number (34735779).

Almost surely, 2^222665125 is an apocalyptic number.

222665125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222665125 is a deficient number, since it is larger than the sum of its proper divisors (55221107).

222665125 is an equidigital number, since it uses as much as digits as its factorization.

222665125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781336 (or 1781326 counting only the distinct ones).

The product of its digits is 14400, while the sum is 31.

The square root of 222665125 is about 14921.9678662032. The cubic root of 222665125 is about 606.1090011134.

The spelling of 222665125 in words is "two hundred twenty-two million, six hundred sixty-five thousand, one hundred twenty-five".