268725224681 has 2 divisors, whose sum is σ = 268725224682. Its totient is φ = 268725224680.

The previous prime is 268725224641. The next prime is 268725224699. The reversal of 268725224681 is 186422527862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265925862400 + 2799362281 = 515680^2 + 52909^2 .

It is a cyclic number.

It is not a de Polignac number, because 268725224681 - 2⁶ = 268725224617 is a prime.

It is a super-2 number, since 2×268725224681² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (268725224641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134362612340 + 134362612341.

It is an arithmetic number, because the mean of its divisors is an integer number (134362612341).

Almost surely, 2^268725224681 is an apocalyptic number.

It is an amenable number.

268725224681 is a deficient number, since it is larger than the sum of its proper divisors (1).

268725224681 is an equidigital number, since it uses as much as digits as its factorization.

268725224681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5160960, while the sum is 53.

The spelling of 268725224681 in words is "two hundred sixty-eight billion, seven hundred twenty-five million, two hundred twenty-four thousand, six hundred eighty-one".