225091856 has 40 divisors (see below), whose sum is σ = 481814400. Its totient is φ = 101013120.

The previous prime is 225091843. The next prime is 225091859. The reversal of 225091856 is 658190522.

It is not an unprimeable number, because it can be changed into a prime (225091859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5810 + ... + 21998.

It is an arithmetic number, because the mean of its divisors is an integer number (12045360).

Almost surely, 2^225091856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225091856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240907200).

225091856 is an abundant number, since it is smaller than the sum of its proper divisors (256722544).

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

225091856 is a wasteful number, since it uses less digits than its factorization.

225091856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16287 (or 16281 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 225091856 is about 15003.0615542295. The cubic root of 225091856 is about 608.3029567034.

The spelling of 225091856 in words is "two hundred twenty-five million, ninety-one thousand, eight hundred fifty-six".