225755219 has 4 divisors (see below), whose sum is σ = 228612960. Its totient is φ = 222897480.

The previous prime is 225755209. The next prime is 225755239. The reversal of 225755219 is 912557522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225755219 is a prime.

It is a super-2 number, since 2×225755219² = 101930837811475922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225755209) 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, 1428752 + ... + 1428909.

It is an arithmetic number, because the mean of its divisors is an integer number (57153240).

Almost surely, 2^225755219 is an apocalyptic number.

225755219 is a deficient number, since it is larger than the sum of its proper divisors (2857741).

225755219 is an equidigital number, since it uses as much as digits as its factorization.

225755219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857740.

The product of its digits is 63000, while the sum is 38.

The square root of 225755219 is about 15025.1528777580. The cubic root of 225755219 is about 608.8999424883.

It can be divided in two parts, 22575 and 5219, that multiplied together give a triangular number (117818925 = T₁₅₃₅₀).

The spelling of 225755219 in words is "two hundred twenty-five million, seven hundred fifty-five thousand, two hundred nineteen".