220344225 has 48 divisors (see below), whose sum is σ = 394046208. Its totient is φ = 108221440.

The previous prime is 220344217. The next prime is 220344239. The reversal of 220344225 is 522443022.

It is a happy number.

It is not a de Polignac number, because 220344225 - 2³ = 220344217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220344195 and 220344204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58087 + ... + 61763.

It is an arithmetic number, because the mean of its divisors is an integer number (8209296).

Almost surely, 2^220344225 is an apocalyptic number.

220344225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

220344225 is a deficient number, since it is larger than the sum of its proper divisors (173701983).

220344225 is a wasteful number, since it uses less digits than its factorization.

220344225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3754 (or 3749 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 220344225 is about 14843.9962611151. The cubic root of 220344225 is about 603.9957613038.

Adding to 220344225 its reverse (522443022), we get a palindrome (742787247).

The spelling of 220344225 in words is "two hundred twenty million, three hundred forty-four thousand, two hundred twenty-five".