225434521 has 8 divisors (see below), whose sum is σ = 243442304. Its totient is φ = 207522000.

The previous prime is 225434519. The next prime is 225434527. The reversal of 225434521 is 125434522.

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 225434521 - 2¹ = 225434519 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 225434521.

It is not an unprimeable number, because it can be changed into a prime (225434527) 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 7 ways as a sum of consecutive naturals, for example, 18855 + ... + 28396.

It is an arithmetic number, because the mean of its divisors is an integer number (30430288).

Almost surely, 2^225434521 is an apocalyptic number.

It is an amenable number.

225434521 is a deficient number, since it is larger than the sum of its proper divisors (18007783).

225434521 is a wasteful number, since it uses less digits than its factorization.

225434521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47631.

The product of its digits is 9600, while the sum is 28.

The square root of 225434521 is about 15014.4770471702. The cubic root of 225434521 is about 608.6114803018.

Subtracting from 225434521 its reverse (125434522), we obtain a palindrome (99999999).

The spelling of 225434521 in words is "two hundred twenty-five million, four hundred thirty-four thousand, five hundred twenty-one".