12525780227777 has 2 divisors, whose sum is σ = 12525780227778. Its totient is φ = 12525780227776.

The previous prime is 12525780227747. The next prime is 12525780227783. The reversal of 12525780227777 is 77772208752521.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11311356391696 + 1214423836081 = 3363236^2 + 1102009^2 .

It is an emirp because it is prime and its reverse (77772208752521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12525780227777 - 2¹⁰ = 12525780226753 is a prime.

It is not a weakly prime, because it can be changed into another prime (12525780227707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6262890113888 + 6262890113889.

It is an arithmetic number, because the mean of its divisors is an integer number (6262890113889).

Almost surely, 2^{12525780227777} is an apocalyptic number.

It is an amenable number.

12525780227777 is a deficient number, since it is larger than the sum of its proper divisors (1).

12525780227777 is an equidigital number, since it uses as much as digits as its factorization.

12525780227777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53782400, while the sum is 62.

The spelling of 12525780227777 in words is "twelve trillion, five hundred twenty-five billion, seven hundred eighty million, two hundred twenty-seven thousand, seven hundred seventy-seven".