225443849 has 4 divisors (see below), whose sum is σ = 231536964. Its totient is φ = 219350736.

The previous prime is 225443843. The next prime is 225443893. The reversal of 225443849 is 948344522.

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

It can be written as a sum of positive squares in 2 ways, for example, as 120012025 + 105431824 = 10955^2 + 10268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225443849 is a prime.

It is a Duffinian 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, 3046502 + ... + 3046575.

It is an arithmetic number, because the mean of its divisors is an integer number (57884241).

Almost surely, 2^225443849 is an apocalyptic number.

It is an amenable number.

225443849 is a deficient number, since it is larger than the sum of its proper divisors (6093115).

225443849 is an equidigital number, since it uses as much as digits as its factorization.

225443849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093114.

The product of its digits is 276480, while the sum is 41.

The square root of 225443849 is about 15014.7876774865. The cubic root of 225443849 is about 608.6198745347.

The spelling of 225443849 in words is "two hundred twenty-five million, four hundred forty-three thousand, eight hundred forty-nine".