1252678890031 has 2 divisors, whose sum is σ = 1252678890032. Its totient is φ = 1252678890030.

The previous prime is 1252678889873. The next prime is 1252678890053. The reversal of 1252678890031 is 1300988762521.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252678890031 is a prime.

It is a super-2 number, since 2×1252678890031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1252678830031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626339445015 + 626339445016.

It is an arithmetic number, because the mean of its divisors is an integer number (626339445016).

Almost surely, 2^{1252678890031} is an apocalyptic number.

1252678890031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252678890031 is an equidigital number, since it uses as much as digits as its factorization.

1252678890031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 52.

The spelling of 1252678890031 in words is "one trillion, two hundred fifty-two billion, six hundred seventy-eight million, eight hundred ninety thousand, thirty-one".