225828791 has 2 divisors, whose sum is σ = 225828792. Its totient is φ = 225828790.

The previous prime is 225828767. The next prime is 225828803. The reversal of 225828791 is 197828522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225828791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225828761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112914395 + 112914396.

It is an arithmetic number, because the mean of its divisors is an integer number (112914396).

Almost surely, 2^225828791 is an apocalyptic number.

225828791 is a deficient number, since it is larger than the sum of its proper divisors (1).

225828791 is an equidigital number, since it uses as much as digits as its factorization.

225828791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 44.

The square root of 225828791 is about 15027.6009728765. The cubic root of 225828791 is about 608.9660806728.

The spelling of 225828791 in words is "two hundred twenty-five million, eight hundred twenty-eight thousand, seven hundred ninety-one".