25766710764757 has 2 divisors, whose sum is σ = 25766710764758. Its totient is φ = 25766710764756.

The previous prime is 25766710764731. The next prime is 25766710764787. The reversal of 25766710764757 is 75746701766752.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25765836912036 + 873852721 = 5076006^2 + 29561^2 .

It is a cyclic number.

It is not a de Polignac number, because 25766710764757 - 2¹⁵ = 25766710731989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25766710764787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12883355382378 + 12883355382379.

It is an arithmetic number, because the mean of its divisors is an integer number (12883355382379).

Almost surely, 2^{25766710764757} is an apocalyptic number.

It is an amenable number.

25766710764757 is a deficient number, since it is larger than the sum of its proper divisors (1).

25766710764757 is an equidigital number, since it uses as much as digits as its factorization.

25766710764757 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 726062400, while the sum is 70.

The spelling of 25766710764757 in words is "twenty-five trillion, seven hundred sixty-six billion, seven hundred ten million, seven hundred sixty-four thousand, seven hundred fifty-seven".