27775025252521 has 2 divisors, whose sum is σ = 27775025252522. Its totient is φ = 27775025252520.

The previous prime is 27775025252483. The next prime is 27775025252551. The reversal of 27775025252521 is 12525252057772.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24675172042921 + 3099853209600 = 4967411^2 + 1760640^2 .

It is a cyclic number.

It is not a de Polignac number, because 27775025252521 - 2¹¹ = 27775025250473 is a prime.

It is not a weakly prime, because it can be changed into another prime (27775025252551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13887512626260 + 13887512626261.

It is an arithmetic number, because the mean of its divisors is an integer number (13887512626261).

Almost surely, 2^{27775025252521} is an apocalyptic number.

It is an amenable number.

27775025252521 is a deficient number, since it is larger than the sum of its proper divisors (1).

27775025252521 is an equidigital number, since it uses as much as digits as its factorization.

27775025252521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6860000, while the sum is 52.

The spelling of 27775025252521 in words is "twenty-seven trillion, seven hundred seventy-five billion, twenty-five million, two hundred fifty-two thousand, five hundred twenty-one".