225321243544 has 16 divisors (see below), whose sum is σ = 422507862720. Its totient is φ = 112652480160.

The previous prime is 225321243527. The next prime is 225321243551. The reversal of 225321243544 is 445342123522.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 899272 + ... + 1122199.

It is an arithmetic number, because the mean of its divisors is an integer number (26406741420).

Almost surely, 2^225321243544 is an apocalyptic number.

It is an amenable number.

225321243544 is a deficient number, since it is larger than the sum of its proper divisors (197186619176).

225321243544 is a wasteful number, since it uses less digits than its factorization.

225321243544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035410 (or 2035406 counting only the distinct ones).

The product of its digits is 230400, while the sum is 37.

The spelling of 225321243544 in words is "two hundred twenty-five billion, three hundred twenty-one million, two hundred forty-three thousand, five hundred forty-four".