225449855 has 4 divisors (see below), whose sum is σ = 270539832. Its totient is φ = 180359880.

The previous prime is 225449849. The next prime is 225449893. The reversal of 225449855 is 558944522.

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

It is not a de Polignac number, because 225449855 - 2⁸ = 225449599 is a prime.

It is a Duffinian number.

It is a congruent 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, 22544981 + ... + 22544990.

It is an arithmetic number, because the mean of its divisors is an integer number (67634958).

Almost surely, 2^225449855 is an apocalyptic number.

225449855 is a deficient number, since it is larger than the sum of its proper divisors (45089977).

225449855 is an equidigital number, since it uses as much as digits as its factorization.

225449855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45089976.

The product of its digits is 576000, while the sum is 44.

The square root of 225449855 is about 15014.9876789826. The cubic root of 225449855 is about 608.6252791894.

The spelling of 225449855 in words is "two hundred twenty-five million, four hundred forty-nine thousand, eight hundred fifty-five".