222918425 has 6 divisors (see below), whose sum is σ = 276418878. Its totient is φ = 178334720.

The previous prime is 222918383. The next prime is 222918439. The reversal of 222918425 is 524819222.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10137856 + 212780569 = 3184^2 + 14587^2 .

It is not a de Polignac number, because 222918425 - 2⁶ = 222918361 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4458344 + ... + 4458393.

It is an arithmetic number, because the mean of its divisors is an integer number (46069813).

Almost surely, 2^222918425 is an apocalyptic number.

222918425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222918425 is a deficient number, since it is larger than the sum of its proper divisors (53500453).

222918425 is an equidigital number, since it uses as much as digits as its factorization.

222918425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8916747 (or 8916742 counting only the distinct ones).

The product of its digits is 23040, while the sum is 35.

The square root of 222918425 is about 14930.4529402158. The cubic root of 222918425 is about 606.3387470604.

The spelling of 222918425 in words is "two hundred twenty-two million, nine hundred eighteen thousand, four hundred twenty-five".