225522505 has 8 divisors (see below), whose sum is σ = 291444552. Its totient is φ = 166539648.

The previous prime is 225522491. The next prime is 225522541. The reversal of 225522505 is 505225522.

225522505 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8225424 + 217297081 = 2868^2 + 14741^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 225522505 - 2²¹ = 223425353 is a prime.

It is a super-2 number, since 2×225522505² = 101720800522950050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734724 + ... + 1734853.

It is an arithmetic number, because the mean of its divisors is an integer number (36430569).

Almost surely, 2^225522505 is an apocalyptic number.

It is an amenable number.

225522505 is a deficient number, since it is larger than the sum of its proper divisors (65922047).

225522505 is a wasteful number, since it uses less digits than its factorization.

225522505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3469595.

The product of its (nonzero) digits is 10000, while the sum is 28.

The square root of 225522505 is about 15017.4067335209. The cubic root of 225522505 is about 608.6906475731.

The spelling of 225522505 in words is "two hundred twenty-five million, five hundred twenty-two thousand, five hundred five".