225705704513213 has 2 divisors, whose sum is σ = 225705704513214. Its totient is φ = 225705704513212.

The previous prime is 225705704513207. The next prime is 225705704513323. The reversal of 225705704513213 is 312315407507522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222352623489049 + 3353081024164 = 14911493^2 + 1831142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-225705704513213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225705704543213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112852852256606 + 112852852256607.

It is an arithmetic number, because the mean of its divisors is an integer number (112852852256607).

Almost surely, 2^{225705704513213} is an apocalyptic number.

It is an amenable number.

225705704513213 is a deficient number, since it is larger than the sum of its proper divisors (1).

225705704513213 is an equidigital number, since it uses as much as digits as its factorization.

225705704513213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764000, while the sum is 47.

The spelling of 225705704513213 in words is "two hundred twenty-five trillion, seven hundred five billion, seven hundred four million, five hundred thirteen thousand, two hundred thirteen".