225683178 has 64 divisors (see below), whose sum is σ = 555709440. Its totient is φ = 59657472.

The previous prime is 225683149. The next prime is 225683203. The reversal of 225683178 is 871386522.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 31026 + ... + 37602.

It is an arithmetic number, because the mean of its divisors is an integer number (8682960).

Almost surely, 2^225683178 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 225683178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (277854720).

225683178 is an abundant number, since it is smaller than the sum of its proper divisors (330026262).

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

225683178 is a wasteful number, since it uses less digits than its factorization.

225683178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6651.

The product of its digits is 161280, while the sum is 42.

The square root of 225683178 is about 15022.7553398170. The cubic root of 225683178 is about 608.8351666841.

The spelling of 225683178 in words is "two hundred twenty-five million, six hundred eighty-three thousand, one hundred seventy-eight".