20525795660753 has 2 divisors, whose sum is σ = 20525795660754. Its totient is φ = 20525795660752.

The previous prime is 20525795660749. The next prime is 20525795660759. The reversal of 20525795660753 is 35706659752502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17757189189184 + 2768606471569 = 4213928^2 + 1663913^2 .

It is a cyclic number.

It is not a de Polignac number, because 20525795660753 - 2² = 20525795660749 is a prime.

It is a super-3 number, since 3×20525795660753³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20525795660759) 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, 10262897830376 + 10262897830377.

It is an arithmetic number, because the mean of its divisors is an integer number (10262897830377).

Almost surely, 2^{20525795660753} is an apocalyptic number.

It is an amenable number.

20525795660753 is a deficient number, since it is larger than the sum of its proper divisors (1).

20525795660753 is an equidigital number, since it uses as much as digits as its factorization.

20525795660753 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 119070000, while the sum is 62.

The spelling of 20525795660753 in words is "twenty trillion, five hundred twenty-five billion, seven hundred ninety-five million, six hundred sixty thousand, seven hundred fifty-three".