222235225 has 12 divisors (see below), whose sum is σ = 278670780. Its totient is φ = 175788800.

The previous prime is 222235219. The next prime is 222235243. The reversal of 222235225 is 522532222.

It can be written as a sum of positive squares in 6 ways, for example, as 1058841 + 221176384 = 1029^2 + 14872^2 .

It is not a de Polignac number, because 222235225 - 2³ = 222235217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 222235225.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47716 + ... + 52165.

It is an arithmetic number, because the mean of its divisors is an integer number (23222565).

Almost surely, 2^222235225 is an apocalyptic number.

222235225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222235225 is a deficient number, since it is larger than the sum of its proper divisors (56435555).

222235225 is an equidigital number, since it uses as much as digits as its factorization.

222235225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99980 (or 99975 counting only the distinct ones).

The product of its digits is 4800, while the sum is 25.

The square root of 222235225 is about 14907.5559700442. Note that the first 3 decimals coincide. The cubic root of 222235225 is about 605.7186778546.

Adding to 222235225 its reverse (522532222), we get a palindrome (744767447).

The spelling of 222235225 in words is "two hundred twenty-two million, two hundred thirty-five thousand, two hundred twenty-five".