12256325252161 has 2 divisors, whose sum is σ = 12256325252162. Its totient is φ = 12256325252160.

The previous prime is 12256325252159. The next prime is 12256325252173. The reversal of 12256325252161 is 16125252365221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9901846758400 + 2354478493761 = 3146720^2 + 1534431^2 .

It is a cyclic number.

It is not a de Polignac number, because 12256325252161 - 2¹ = 12256325252159 is a prime.

Together with 12256325252159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12256325252141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6128162626080 + 6128162626081.

It is an arithmetic number, because the mean of its divisors is an integer number (6128162626081).

Almost surely, 2^{12256325252161} is an apocalyptic number.

It is an amenable number.

12256325252161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12256325252161 is an equidigital number, since it uses as much as digits as its factorization.

12256325252161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432000, while the sum is 43.

The spelling of 12256325252161 in words is "twelve trillion, two hundred fifty-six billion, three hundred twenty-five million, two hundred fifty-two thousand, one hundred sixty-one".