225771778 has 8 divisors (see below), whose sum is σ = 339306768. Its totient is φ = 112669524.

The previous prime is 225771773. The next prime is 225771779. The reversal of 225771778 is 877177522.

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

It is not an unprimeable number, because it can be changed into a prime (225771773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106876 + ... + 108967.

It is an arithmetic number, because the mean of its divisors is an integer number (42413346).

Almost surely, 2^225771778 is an apocalyptic number.

225771778 is a deficient number, since it is larger than the sum of its proper divisors (113534990).

225771778 is a wasteful number, since it uses less digits than its factorization.

225771778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216368.

The product of its digits is 384160, while the sum is 46.

The square root of 225771778 is about 15025.7039102998. The cubic root of 225771778 is about 608.9148295972.

The spelling of 225771778 in words is "two hundred twenty-five million, seven hundred seventy-one thousand, seven hundred seventy-eight".