25600726061 has 2 divisors, whose sum is σ = 25600726062. Its totient is φ = 25600726060.

The previous prime is 25600726043. The next prime is 25600726079. The reversal of 25600726061 is 16062700652.

It is a balanced prime because it is at equal distance from previous prime (25600726043) and next prime (25600726079).

It can be written as a sum of positive squares in only one way, i.e., 22539317161 + 3061408900 = 150131^2 + 55330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25600726061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25600726661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12800363030 + 12800363031.

It is an arithmetic number, because the mean of its divisors is an integer number (12800363031).

Almost surely, 2^25600726061 is an apocalyptic number.

It is an amenable number.

25600726061 is a deficient number, since it is larger than the sum of its proper divisors (1).

25600726061 is an equidigital number, since it uses as much as digits as its factorization.

25600726061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 25600726061 in words is "twenty-five billion, six hundred million, seven hundred twenty-six thousand, sixty-one".