225054221 has 8 divisors (see below), whose sum is σ = 270742080. Its totient is φ = 182750688.

The previous prime is 225054209. The next prime is 225054227. The reversal of 225054221 is 122450522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225054221 - 2¹⁰ = 225053197 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225054227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 845936 + ... + 846201.

It is an arithmetic number, because the mean of its divisors is an integer number (33842760).

Almost surely, 2^225054221 is an apocalyptic number.

It is an amenable number.

225054221 is a deficient number, since it is larger than the sum of its proper divisors (45687859).

225054221 is a wasteful number, since it uses less digits than its factorization.

225054221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1692163.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 225054221 is about 15001.8072577940. The cubic root of 225054221 is about 608.2690523851.

The spelling of 225054221 in words is "two hundred twenty-five million, fifty-four thousand, two hundred twenty-one".