225911219 has 4 divisors (see below), whose sum is σ = 227560344. Its totient is φ = 224262096.

The previous prime is 225911201. The next prime is 225911237. The reversal of 225911219 is 912119522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 912119522 = 2 ⋅456059761.

It is an interprime number because it is at equal distance from previous prime (225911201) and next prime (225911237).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225911219 is a prime.

It is a super-2 number, since 2×225911219² = 102071757740131922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225911519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 824357 + ... + 824630.

It is an arithmetic number, because the mean of its divisors is an integer number (56890086).

Almost surely, 2^225911219 is an apocalyptic number.

225911219 is a deficient number, since it is larger than the sum of its proper divisors (1649125).

225911219 is a wasteful number, since it uses less digits than its factorization.

225911219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649124.

The product of its digits is 3240, while the sum is 32.

The square root of 225911219 is about 15030.3432761863. The cubic root of 225911219 is about 609.0401629749.

The spelling of 225911219 in words is "two hundred twenty-five million, nine hundred eleven thousand, two hundred nineteen".