225850805 has 8 divisors (see below), whose sum is σ = 271267800. Its totient is φ = 180516096.

The previous prime is 225850799. The next prime is 225850817. The reversal of 225850805 is 508058522.

It can be written as a sum of positive squares in 4 ways, for example, as 43546801 + 182304004 = 6599^2 + 13502^2 .

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 225850805 - 2⁴ = 225850789 is a prime.

It is a super-2 number, since 2×225850805² = 102017172238296050, which contains 22 as substring.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 14360 + ... + 25649.

It is an arithmetic number, because the mean of its divisors is an integer number (33908475).

Almost surely, 2^225850805 is an apocalyptic number.

It is an amenable number.

225850805 is a deficient number, since it is larger than the sum of its proper divisors (45416995).

225850805 is a wasteful number, since it uses less digits than its factorization.

225850805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41143.

The product of its (nonzero) digits is 32000, while the sum is 35.

The square root of 225850805 is about 15028.3334072678. Note that the first 3 decimals coincide. The cubic root of 225850805 is about 608.9858675560.

The spelling of 225850805 in words is "two hundred twenty-five million, eight hundred fifty thousand, eight hundred five".