225042444 has 36 divisors (see below), whose sum is σ = 620572680. Its totient is φ = 68194560.

The previous prime is 225042431. The next prime is 225042469. The reversal of 225042444 is 444240522.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 283749 + ... + 284540.

It is an arithmetic number, because the mean of its divisors is an integer number (17238130).

Almost surely, 2^225042444 is an apocalyptic number.

It is an amenable number.

225042444 is an abundant number, since it is smaller than the sum of its proper divisors (395530236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225042444 is a wasteful number, since it uses less digits than its factorization.

225042444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568310 (or 568305 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 225042444 is about 15001.4147332843. The cubic root of 225042444 is about 608.2584420389.

Adding to 225042444 its reverse (444240522), we get a palindrome (669282966).

The spelling of 225042444 in words is "two hundred twenty-five million, forty-two thousand, four hundred forty-four".