225172211 has 32 divisors (see below), whose sum is σ = 270950400. Its totient is φ = 184826880.

The previous prime is 225172187. The next prime is 225172229. The reversal of 225172211 is 112271522.

It is a cyclic number.

It is not a de Polignac number, because 225172211 - 2¹⁰ = 225171187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225172511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 587726 + ... + 588108.

It is an arithmetic number, because the mean of its divisors is an integer number (8467200).

Almost surely, 2^225172211 is an apocalyptic number.

225172211 is a deficient number, since it is larger than the sum of its proper divisors (45778189).

225172211 is a wasteful number, since it uses less digits than its factorization.

225172211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539.

The product of its digits is 560, while the sum is 23.

The square root of 225172211 is about 15005.7392686932. The cubic root of 225172211 is about 608.3753336278.

The spelling of 225172211 in words is "two hundred twenty-five million, one hundred seventy-two thousand, two hundred eleven".