225847279 has 4 divisors (see below), whose sum is σ = 258111184. Its totient is φ = 193583376.

The previous prime is 225847277. The next prime is 225847283. The reversal of 225847279 is 972748522.

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

It is not a de Polignac number, because 225847279 - 2¹ = 225847277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225847277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16131942 + ... + 16131955.

It is an arithmetic number, because the mean of its divisors is an integer number (64527796).

Almost surely, 2^225847279 is an apocalyptic number.

225847279 is a deficient number, since it is larger than the sum of its proper divisors (32263905).

225847279 is an equidigital number, since it uses as much as digits as its factorization.

225847279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32263904.

The product of its digits is 564480, while the sum is 46.

The square root of 225847279 is about 15028.2160950660. The cubic root of 225847279 is about 608.9826983616.

The spelling of 225847279 in words is "two hundred twenty-five million, eight hundred forty-seven thousand, two hundred seventy-nine".