226645225 has 12 divisors (see below), whose sum is σ = 286344396. Its totient is φ = 177894080.

The previous prime is 226645213. The next prime is 226645231. The reversal of 226645225 is 522546622.

It can be written as a sum of positive squares in 6 ways, for example, as 21353641 + 205291584 = 4621^2 + 14328^2 .

It is a de Polignac number, because none of the positive numbers 2^k-226645225 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84202 + ... + 86851.

It is an arithmetic number, because the mean of its divisors is an integer number (23862033).

Almost surely, 2^226645225 is an apocalyptic number.

226645225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

226645225 is a deficient number, since it is larger than the sum of its proper divisors (59699171).

226645225 is a wasteful number, since it uses less digits than its factorization.

226645225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171116 (or 171111 counting only the distinct ones).

The product of its digits is 57600, while the sum is 34.

The square root of 226645225 is about 15054.7409476218. The cubic root of 226645225 is about 609.6990587585.

It can be divided in two parts, 22664 and 5225, that added together give a square (27889 = 167²).

The spelling of 226645225 in words is "two hundred twenty-six million, six hundred forty-five thousand, two hundred twenty-five".