225852791 has 6 divisors (see below), whose sum is σ = 238365792. Its totient is φ = 213965460.

The previous prime is 225852787. The next prime is 225852793. The reversal of 225852791 is 197258522.

It is not a de Polignac number, because 225852791 - 2² = 225852787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (225852793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 312455 + ... + 313176.

It is an arithmetic number, because the mean of its divisors is an integer number (39727632).

Almost surely, 2^225852791 is an apocalyptic number.

225852791 is a deficient number, since it is larger than the sum of its proper divisors (12513001).

225852791 is an equidigital number, since it uses as much as digits as its factorization.

225852791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625669 (or 625650 counting only the distinct ones).

The product of its digits is 100800, while the sum is 41.

The square root of 225852791 is about 15028.3994823135. The cubic root of 225852791 is about 608.9876525727.

The spelling of 225852791 in words is "two hundred twenty-five million, eight hundred fifty-two thousand, seven hundred ninety-one".