1252678889873 has 2 divisors, whose sum is σ = 1252678889874. Its totient is φ = 1252678889872.

The previous prime is 1252678889831. The next prime is 1252678890031. The reversal of 1252678889873 is 3789888762521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 830117787664 + 422561102209 = 911108^2 + 650047^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252678889873 - 2⁶ = 1252678889809 is a prime.

It is a super-2 number, since 2×1252678889873² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1252678889873.

It is not a weakly prime, because it can be changed into another prime (1252678889173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626339444936 + 626339444937.

It is an arithmetic number, because the mean of its divisors is an integer number (626339444937).

Almost surely, 2^{1252678889873} is an apocalyptic number.

It is an amenable number.

1252678889873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252678889873 is an equidigital number, since it uses as much as digits as its factorization.

1252678889873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 650280960, while the sum is 74.

The spelling of 1252678889873 in words is "one trillion, two hundred fifty-two billion, six hundred seventy-eight million, eight hundred eighty-nine thousand, eight hundred seventy-three".