225356849 has 2 divisors, whose sum is σ = 225356850. Its totient is φ = 225356848.

The previous prime is 225356843. The next prime is 225356897. The reversal of 225356849 is 948653522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 218093824 + 7263025 = 14768^2 + 2695^2 .

It is a cyclic number.

It is not a de Polignac number, because 225356849 - 2¹² = 225352753 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (225356843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112678424 + 112678425.

It is an arithmetic number, because the mean of its divisors is an integer number (112678425).

Almost surely, 2^225356849 is an apocalyptic number.

It is an amenable number.

225356849 is a deficient number, since it is larger than the sum of its proper divisors (1).

225356849 is an equidigital number, since it uses as much as digits as its factorization.

225356849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 44.

The square root of 225356849 is about 15011.8902540619. The cubic root of 225356849 is about 608.5415745618.

The spelling of 225356849 in words is "two hundred twenty-five million, three hundred fifty-six thousand, eight hundred forty-nine".