115756025221 has 2 divisors, whose sum is σ = 115756025222. Its totient is φ = 115756025220.

The previous prime is 115756025141. The next prime is 115756025227. The reversal of 115756025221 is 122520657511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112852324225 + 2903700996 = 335935^2 + 53886^2 .

It is a cyclic number.

It is not a de Polignac number, because 115756025221 - 2¹⁵ = 115755992453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115756025227) 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, 57878012610 + 57878012611.

It is an arithmetic number, because the mean of its divisors is an integer number (57878012611).

Almost surely, 2^115756025221 is an apocalyptic number.

It is an amenable number.

115756025221 is a deficient number, since it is larger than the sum of its proper divisors (1).

115756025221 is an equidigital number, since it uses as much as digits as its factorization.

115756025221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42000, while the sum is 37.

The spelling of 115756025221 in words is "one hundred fifteen billion, seven hundred fifty-six million, twenty-five thousand, two hundred twenty-one".