1250623488689 has 2 divisors, whose sum is σ = 1250623488690. Its totient is φ = 1250623488688.

The previous prime is 1250623488677. The next prime is 1250623488721. The reversal of 1250623488689 is 9868843260521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1250326512400 + 296976289 = 1118180^2 + 17233^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1250623488689 is a prime.

It is a super-2 number, since 2×1250623488689² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1250623488089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625311744344 + 625311744345.

It is an arithmetic number, because the mean of its divisors is an integer number (625311744345).

Almost surely, 2^{1250623488689} is an apocalyptic number.

It is an amenable number.

1250623488689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1250623488689 is an equidigital number, since it uses as much as digits as its factorization.

1250623488689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39813120, while the sum is 62.

The spelling of 1250623488689 in words is "one trillion, two hundred fifty billion, six hundred twenty-three million, four hundred eighty-eight thousand, six hundred eighty-nine".