225165506 has 8 divisors (see below), whose sum is σ = 337914444. Its totient is φ = 112527360.

The previous prime is 225165503. The next prime is 225165509. The reversal of 225165506 is 605561522.

It is an interprime number because it is at equal distance from previous prime (225165503) and next prime (225165509).

It can be written as a sum of positive squares in 2 ways, for example, as 197655481 + 27510025 = 14059^2 + 5245^2 .

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

It is not an unprimeable number, because it can be changed into a prime (225165503) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 22415 + ... + 30866.

Almost surely, 2^225165506 is an apocalyptic number.

225165506 is a deficient number, since it is larger than the sum of its proper divisors (112748938).

225165506 is a wasteful number, since it uses less digits than its factorization.

225165506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55396.

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 225165506 is about 15005.5158525124. The cubic root of 225165506 is about 608.3692949947.

The spelling of 225165506 in words is "two hundred twenty-five million, one hundred sixty-five thousand, five hundred six".