225866419 has 4 divisors (see below), whose sum is σ = 225897496. Its totient is φ = 225835344.

The previous prime is 225866387. The next prime is 225866429. The reversal of 225866419 is 914668522.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 225866419 - 2⁵ = 225866387 is a prime.

It is a super-2 number, since 2×225866419² = 102031278463767122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225866429) by changing a digit.

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, 1852 + ... + 21334.

It is an arithmetic number, because the mean of its divisors is an integer number (56474374).

Almost surely, 2^225866419 is an apocalyptic number.

225866419 is a deficient number, since it is larger than the sum of its proper divisors (31077).

225866419 is a wasteful number, since it uses less digits than its factorization.

225866419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31076.

The product of its digits is 207360, while the sum is 43.

The square root of 225866419 is about 15028.8528837034. The cubic root of 225866419 is about 608.9999011363. Note that the first 4 decimals are identical.

The spelling of 225866419 in words is "two hundred twenty-five million, eight hundred sixty-six thousand, four hundred nineteen".