225241391 has 2 divisors, whose sum is σ = 225241392. Its totient is φ = 225241390.

The previous prime is 225241351. The next prime is 225241397. The reversal of 225241391 is 193142522.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225241391 is a prime.

It is a super-2 number, since 2×225241391² = 101467368439229762, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225241397) 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 as a sum of consecutive naturals, namely, 112620695 + 112620696.

It is an arithmetic number, because the mean of its divisors is an integer number (112620696).

Almost surely, 2^225241391 is an apocalyptic number.

225241391 is a deficient number, since it is larger than the sum of its proper divisors (1).

225241391 is an equidigital number, since it uses as much as digits as its factorization.

225241391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 225241391 is about 15008.0442096897. The cubic root of 225241391 is about 608.4376312738.

The spelling of 225241391 in words is "two hundred twenty-five million, two hundred forty-one thousand, three hundred ninety-one".