225120223 has 4 divisors (see below), whose sum is σ = 228935880. Its totient is φ = 221304568.

The previous prime is 225120221. The next prime is 225120241. The reversal of 225120223 is 322021522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 225120223 - 2¹ = 225120221 is a prime.

It is a super-2 number, since 2×225120223² = 101358229607139458, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 225120223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225120221) 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 3 ways as a sum of consecutive naturals, for example, 1907740 + ... + 1907857.

It is an arithmetic number, because the mean of its divisors is an integer number (57233970).

Almost surely, 2^225120223 is an apocalyptic number.

225120223 is a deficient number, since it is larger than the sum of its proper divisors (3815657).

225120223 is an equidigital number, since it uses as much as digits as its factorization.

225120223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815656.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 225120223 is about 15004.0068981589. The cubic root of 225120223 is about 608.3285092422.

Adding to 225120223 its reverse (322021522), we get a palindrome (547141745).

The spelling of 225120223 in words is "two hundred twenty-five million, one hundred twenty thousand, two hundred twenty-three".