225891133 has 16 divisors (see below), whose sum is σ = 256838400. Its totient is φ = 196948800.

The previous prime is 225891097. The next prime is 225891151. The reversal of 225891133 is 331198522.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225891133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225891163) 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, 94908 + ... + 97258.

It is an arithmetic number, because the mean of its divisors is an integer number (16052400).

Almost surely, 2^225891133 is an apocalyptic number.

It is an amenable number.

225891133 is a deficient number, since it is larger than the sum of its proper divisors (30947267).

225891133 is a wasteful number, since it uses less digits than its factorization.

225891133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772.

The product of its digits is 12960, while the sum is 34.

The square root of 225891133 is about 15029.6750796549. The cubic root of 225891133 is about 609.0221123098.

The spelling of 225891133 in words is "two hundred twenty-five million, eight hundred ninety-one thousand, one hundred thirty-three".