125767616660261 has 2 divisors, whose sum is σ = 125767616660262. Its totient is φ = 125767616660260.

The previous prime is 125767616660239. The next prime is 125767616660281. The reversal of 125767616660261 is 162066616767521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91617326029636 + 34150290630625 = 9571694^2 + 5843825^2 .

It is a cyclic number.

It is not a de Polignac number, because 125767616660261 - 2³⁰ = 125766542918437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 125767616660194 and 125767616660203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125767616660281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62883808330130 + 62883808330131.

It is an arithmetic number, because the mean of its divisors is an integer number (62883808330131).

Almost surely, 2^{125767616660261} is an apocalyptic number.

It is an amenable number.

125767616660261 is a deficient number, since it is larger than the sum of its proper divisors (1).

125767616660261 is an equidigital number, since it uses as much as digits as its factorization.

125767616660261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45722880, while the sum is 62.

The spelling of 125767616660261 in words is "one hundred twenty-five trillion, seven hundred sixty-seven billion, six hundred sixteen million, six hundred sixty thousand, two hundred sixty-one".