225540793 has 2 divisors, whose sum is σ = 225540794. Its totient is φ = 225540792.

The previous prime is 225540781. The next prime is 225540817. The reversal of 225540793 is 397045522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200420649 + 25120144 = 14157^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 225540793 - 2²¹ = 223443641 is a prime.

It is not a weakly prime, because it can be changed into another prime (225540703) 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, 112770396 + 112770397.

It is an arithmetic number, because the mean of its divisors is an integer number (112770397).

Almost surely, 2^225540793 is an apocalyptic number.

It is an amenable number.

225540793 is a deficient number, since it is larger than the sum of its proper divisors (1).

225540793 is an equidigital number, since it uses as much as digits as its factorization.

225540793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 225540793 is about 15018.0156145877. The cubic root of 225540793 is about 608.7071003785.

The spelling of 225540793 in words is "two hundred twenty-five million, five hundred forty thousand, seven hundred ninety-three".