225897816 has 32 divisors (see below), whose sum is σ = 565171200. Its totient is φ = 75242400.

The previous prime is 225897809. The next prime is 225897829. The reversal of 225897816 is 618798522.

225897816 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 39541 + ... + 44891.

It is an arithmetic number, because the mean of its divisors is an integer number (17661600).

Almost surely, 2^225897816 is an apocalyptic number.

It is an amenable number.

225897816 is an abundant number, since it is smaller than the sum of its proper divisors (339273384).

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

225897816 is a wasteful number, since it uses less digits than its factorization.

225897816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7119 (or 7115 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 225897816 is about 15029.8974048395. The cubic root of 225897816 is about 609.0281182333.

The spelling of 225897816 in words is "two hundred twenty-five million, eight hundred ninety-seven thousand, eight hundred sixteen".