225983521 has 8 divisors (see below), whose sum is σ = 233466624. Its totient is φ = 218512560.

The previous prime is 225983509. The next prime is 225983551. The reversal of 225983521 is 125389522.

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 225983521 - 2²⁵ = 192429089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225983551) 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, 49491 + ... + 53863.

It is an arithmetic number, because the mean of its divisors is an integer number (29183328).

Almost surely, 2^225983521 is an apocalyptic number.

It is an amenable number.

225983521 is a deficient number, since it is larger than the sum of its proper divisors (7483103).

225983521 is a wasteful number, since it uses less digits than its factorization.

225983521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6071.

The product of its digits is 43200, while the sum is 37.

The square root of 225983521 is about 15032.7482849943. The cubic root of 225983521 is about 609.1051296834.

The spelling of 225983521 in words is "two hundred twenty-five million, nine hundred eighty-three thousand, five hundred twenty-one".