225683155 has 4 divisors (see below), whose sum is σ = 270819792. Its totient is φ = 180546520.

The previous prime is 225683149. The next prime is 225683203. The reversal of 225683155 is 551386522.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 225683155 - 2⁷ = 225683027 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 22568311 + ... + 22568320.

It is an arithmetic number, because the mean of its divisors is an integer number (67704948).

Almost surely, 2^225683155 is an apocalyptic number.

225683155 is a deficient number, since it is larger than the sum of its proper divisors (45136637).

225683155 is an equidigital number, since it uses as much as digits as its factorization.

225683155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45136636.

The product of its digits is 72000, while the sum is 37.

The square root of 225683155 is about 15022.7545743116. The cubic root of 225683155 is about 608.8351460014.

The spelling of 225683155 in words is "two hundred twenty-five million, six hundred eighty-three thousand, one hundred fifty-five".