225531142 has 8 divisors (see below), whose sum is σ = 338403456. Its totient is φ = 112729992.

The previous prime is 225531109. The next prime is 225531143. The reversal of 225531142 is 241135522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225531143) 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 3 ways as a sum of consecutive naturals, for example, 8998 + ... + 23065.

It is an arithmetic number, because the mean of its divisors is an integer number (42300432).

Almost surely, 2^225531142 is an apocalyptic number.

225531142 is a deficient number, since it is larger than the sum of its proper divisors (112872314).

225531142 is a wasteful number, since it uses less digits than its factorization.

225531142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35582.

The product of its digits is 2400, while the sum is 25.

The square root of 225531142 is about 15017.6942970617. The cubic root of 225531142 is about 608.6984179639.

Adding to 225531142 its reverse (241135522), we get a palindrome (466666664).

The spelling of 225531142 in words is "two hundred twenty-five million, five hundred thirty-one thousand, one hundred forty-two".