225778 has 8 divisors (see below), whose sum is σ = 387072. Its totient is φ = 96756.

The previous prime is 225769. The next prime is 225779. The reversal of 225778 is 877522.

225778 is nontrivially palindromic in base 12.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (225779) 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 3 ways as a sum of consecutive naturals, for example, 8050 + ... + 8077.

It is an arithmetic number, because the mean of its divisors is an integer number (48384).

2²²⁵⁷⁷⁸ is an apocalyptic number.

225778 is a deficient number, since it is larger than the sum of its proper divisors (161294).

225778 is a wasteful number, since it uses less digits than its factorization.

225778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16136.

The product of its digits is 7840, while the sum is 31.

The square root of 225778 is about 475.1610253377. The cubic root of 225778 is about 60.8920423201.

The spelling of 225778 in words is "two hundred twenty-five thousand, seven hundred seventy-eight".