225643022 has 16 divisors (see below), whose sum is σ = 375494400. Its totient is φ = 100826040.

The previous prime is 225643021. The next prime is 225643063. The reversal of 225643022 is 220346522.

It is a junction number, because it is equal to n+sod(n) for n = 225642982 and 225643000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225643021) 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, 85622 + ... + 88217.

It is an arithmetic number, because the mean of its divisors is an integer number (23468400).

Almost surely, 2^225643022 is an apocalyptic number.

225643022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

225643022 is a deficient number, since it is larger than the sum of its proper divisors (149851378).

225643022 is a wasteful number, since it uses less digits than its factorization.

225643022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173911.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 225643022 is about 15021.4187745366. The cubic root of 225643022 is about 608.7990543556.

Adding to 225643022 its reverse (220346522), we get a palindrome (445989544).

The spelling of 225643022 in words is "two hundred twenty-five million, six hundred forty-three thousand, twenty-two".