225755816 has 32 divisors (see below), whose sum is σ = 497296800. Its totient is φ = 94722240.

The previous prime is 225755809. The next prime is 225755819. The reversal of 225755816 is 618557522.

It is not an unprimeable number, because it can be changed into a prime (225755819) 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, 97526 + ... + 99813.

It is an arithmetic number, because the mean of its divisors is an integer number (15540525).

Almost surely, 2^225755816 is an apocalyptic number.

225755816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

225755816 is an abundant number, since it is smaller than the sum of its proper divisors (271540984).

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

225755816 is a wasteful number, since it uses less digits than its factorization.

225755816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197369 (or 197365 counting only the distinct ones).

The product of its digits is 168000, while the sum is 41.

The square root of 225755816 is about 15025.1727444313. The cubic root of 225755816 is about 608.9004792244.

The spelling of 225755816 in words is "two hundred twenty-five million, seven hundred fifty-five thousand, eight hundred sixteen".