225525243 has 4 divisors (see below), whose sum is σ = 300700328. Its totient is φ = 150350160.

The previous prime is 225525241. The next prime is 225525253. The reversal of 225525243 is 342525522.

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

It is not a de Polignac number, because 225525243 - 2¹ = 225525241 is a prime.

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 225525243.

It is not an unprimeable number, because it can be changed into a prime (225525241) 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, 37587538 + ... + 37587543.

It is an arithmetic number, because the mean of its divisors is an integer number (75175082).

Almost surely, 2^225525243 is an apocalyptic number.

225525243 is a deficient number, since it is larger than the sum of its proper divisors (75175085).

225525243 is an equidigital number, since it uses as much as digits as its factorization.

225525243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75175084.

The product of its digits is 24000, while the sum is 30.

The square root of 225525243 is about 15017.4978941234. The cubic root of 225525243 is about 608.6931108723.

It can be divided in two parts, 2255 and 25243, that multiplied together give a palindrome (56922965).

The spelling of 225525243 in words is "two hundred twenty-five million, five hundred twenty-five thousand, two hundred forty-three".