225532155 has 16 divisors (see below), whose sum is σ = 361163520. Its totient is φ = 120179808.

The previous prime is 225532129. The next prime is 225532157. The reversal of 225532155 is 551235522.

It is not a de Polignac number, because 225532155 - 2⁹ = 225531643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (225532157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13386 + ... + 25104.

It is an arithmetic number, because the mean of its divisors is an integer number (22572720).

Almost surely, 2^225532155 is an apocalyptic number.

225532155 is a deficient number, since it is larger than the sum of its proper divisors (135631365).

225532155 is a wasteful number, since it uses less digits than its factorization.

225532155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13010.

The product of its digits is 15000, while the sum is 30.

The square root of 225532155 is about 15017.7280239056. The cubic root of 225532155 is about 608.6993293097.

Adding to 225532155 its reverse (551235522), we get a palindrome (776767677).

The spelling of 225532155 in words is "two hundred twenty-five million, five hundred thirty-two thousand, one hundred fifty-five".