225191044709 has 2 divisors, whose sum is σ = 225191044710. Its totient is φ = 225191044708.

The previous prime is 225191044703. The next prime is 225191044717. The reversal of 225191044709 is 907440191522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172907935684 + 52283109025 = 415822^2 + 228655^2 .

It is a cyclic number.

It is not a de Polignac number, because 225191044709 - 2⁸ = 225191044453 is a prime.

It is a super-2 number, since 2×225191044709² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 225191044709.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (225191044703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112595522354 + 112595522355.

It is an arithmetic number, because the mean of its divisors is an integer number (112595522355).

Almost surely, 2^225191044709 is an apocalyptic number.

It is an amenable number.

225191044709 is a deficient number, since it is larger than the sum of its proper divisors (1).

225191044709 is an equidigital number, since it uses as much as digits as its factorization.

225191044709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 225191044709 in words is "two hundred twenty-five billion, one hundred ninety-one million, forty-four thousand, seven hundred nine".