75852525785081 has 2 divisors, whose sum is σ = 75852525785082. Its totient is φ = 75852525785080.

The previous prime is 75852525785063. The next prime is 75852525785167. The reversal of 75852525785081 is 18058752525857.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71325456793600 + 4527068991481 = 8445440^2 + 2127691^2 .

It is an emirp because it is prime and its reverse (18058752525857) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75852525785081 - 2²² = 75852521590777 is a prime.

It is a super-2 number, since 2×75852525785081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (75852525385081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37926262892540 + 37926262892541.

It is an arithmetic number, because the mean of its divisors is an integer number (37926262892541).

Almost surely, 2^{75852525785081} is an apocalyptic number.

It is an amenable number.

75852525785081 is a deficient number, since it is larger than the sum of its proper divisors (1).

75852525785081 is an equidigital number, since it uses as much as digits as its factorization.

75852525785081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 313600000, while the sum is 68.

The spelling of 75852525785081 in words is "seventy-five trillion, eight hundred fifty-two billion, five hundred twenty-five million, seven hundred eighty-five thousand, eighty-one".