225353291 has 4 divisors (see below), whose sum is σ = 232622784. Its totient is φ = 218083800.

The previous prime is 225353257. The next prime is 225353311. The reversal of 225353291 is 192353522.

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-225353291 is a prime.

It is a super-3 number, since 3×225353291³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (225353201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634700 + ... + 3634761.

It is an arithmetic number, because the mean of its divisors is an integer number (58155696).

Almost surely, 2^225353291 is an apocalyptic number.

225353291 is a deficient number, since it is larger than the sum of its proper divisors (7269493).

225353291 is an equidigital number, since it uses as much as digits as its factorization.

225353291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7269492.

The product of its digits is 16200, while the sum is 32.

The square root of 225353291 is about 15011.7717475320. The cubic root of 225353291 is about 608.5383719340.

The spelling of 225353291 in words is "two hundred twenty-five million, three hundred fifty-three thousand, two hundred ninety-one".