225469181 has 16 divisors (see below), whose sum is σ = 287199360. Its totient is φ = 172316160.

The previous prime is 225469177. The next prime is 225469201. The reversal of 225469181 is 181964522.

It is a cyclic number.

It is not a de Polignac number, because 225469181 - 2² = 225469177 is a prime.

It is a super-2 number, since 2×225469181² = 101672703161621522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225465181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47600 + ... + 52121.

It is an arithmetic number, because the mean of its divisors is an integer number (17949960).

Almost surely, 2^225469181 is an apocalyptic number.

It is an amenable number.

225469181 is a deficient number, since it is larger than the sum of its proper divisors (61730179).

225469181 is a wasteful number, since it uses less digits than its factorization.

225469181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99764.

The product of its digits is 34560, while the sum is 38.

The square root of 225469181 is about 15015.6312221631. The cubic root of 225469181 is about 608.6426695400.

The spelling of 225469181 in words is "two hundred twenty-five million, four hundred sixty-nine thousand, one hundred eighty-one".