225806193 has 12 divisors (see below), whose sum is σ = 326666548. Its totient is φ = 150305760.

The previous prime is 225806177. The next prime is 225806197. The reversal of 225806193 is 391608522.

It can be written as a sum of positive squares in 2 ways, for example, as 74442384 + 151363809 = 8628^2 + 12303^2 .

It is not a de Polignac number, because 225806193 - 2⁴ = 225806177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225806197) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13030 + ... + 24927.

Almost surely, 2^225806193 is an apocalyptic number.

It is an amenable number.

225806193 is a deficient number, since it is larger than the sum of its proper divisors (100860355).

225806193 is a wasteful number, since it uses less digits than its factorization.

225806193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38624 (or 38621 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 225806193 is about 15026.8490709130. The cubic root of 225806193 is about 608.9457675343.

The spelling of 225806193 in words is "two hundred twenty-five million, eight hundred six thousand, one hundred ninety-three".