225443847 has 4 divisors (see below), whose sum is σ = 300591800. Its totient is φ = 150295896.

The previous prime is 225443843. The next prime is 225443893. The reversal of 225443847 is 748344522.

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 225443847 - 2² = 225443843 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 (225443843) 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, 37573972 + ... + 37573977.

It is an arithmetic number, because the mean of its divisors is an integer number (75147950).

Almost surely, 2^225443847 is an apocalyptic number.

225443847 is a deficient number, since it is larger than the sum of its proper divisors (75147953).

225443847 is an equidigital number, since it uses as much as digits as its factorization.

225443847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75147952.

The product of its digits is 215040, while the sum is 39.

The square root of 225443847 is about 15014.7876108855. The cubic root of 225443847 is about 608.6198727349.

The spelling of 225443847 in words is "two hundred twenty-five million, four hundred forty-three thousand, eight hundred forty-seven".