252678080209 has 2 divisors, whose sum is σ = 252678080210. Its totient is φ = 252678080208.

The previous prime is 252678080183. The next prime is 252678080227. The reversal of 252678080209 is 902080876252.

It is a happy number.

252678080209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214042246609 + 38635833600 = 462647^2 + 196560^2 .

It is a cyclic number.

It is not a de Polignac number, because 252678080209 - 2⁹ = 252678079697 is a prime.

It is not a weakly prime, because it can be changed into another prime (252678080269) 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, 126339040104 + 126339040105.

It is an arithmetic number, because the mean of its divisors is an integer number (126339040105).

Almost surely, 2^252678080209 is an apocalyptic number.

It is an amenable number.

252678080209 is a deficient number, since it is larger than the sum of its proper divisors (1).

252678080209 is an equidigital number, since it uses as much as digits as its factorization.

252678080209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 49.

The spelling of 252678080209 in words is "two hundred fifty-two billion, six hundred seventy-eight million, eighty thousand, two hundred nine".