225244505 has 4 divisors (see below), whose sum is σ = 270293412. Its totient is φ = 180195600.

The previous prime is 225244499. The next prime is 225244517. The reversal of 225244505 is 505442522.

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 117852736 + 107391769 = 10856^2 + 10363^2 .

It is a de Polignac number, because none of the positive numbers 2^k-225244505 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, 22524446 + ... + 22524455.

It is an arithmetic number, because the mean of its divisors is an integer number (67573353).

Almost surely, 2^225244505 is an apocalyptic number.

It is an amenable number.

225244505 is a deficient number, since it is larger than the sum of its proper divisors (45048907).

225244505 is an equidigital number, since it uses as much as digits as its factorization.

225244505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45048906.

The product of its (nonzero) digits is 16000, while the sum is 29.

The square root of 225244505 is about 15008.1479536950. The cubic root of 225244505 is about 608.4404351783.

The spelling of 225244505 in words is "two hundred twenty-five million, two hundred forty-four thousand, five hundred five".