1252458777859 has 16 divisors (see below), whose sum is σ = 1272940220160. Its totient is φ = 1232159500000.

The previous prime is 1252458777847. The next prime is 1252458777877. The reversal of 1252458777859 is 9587778542521.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252458777859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252458777659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10563114 + ... + 10681024.

It is an arithmetic number, because the mean of its divisors is an integer number (79558763760).

Almost surely, 2^{1252458777859} is an apocalyptic number.

1252458777859 is a deficient number, since it is larger than the sum of its proper divisors (20481442301).

1252458777859 is a wasteful number, since it uses less digits than its factorization.

1252458777859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118682.

The product of its digits is 395136000, while the sum is 70.

The spelling of 1252458777859 in words is "one trillion, two hundred fifty-two billion, four hundred fifty-eight million, seven hundred seventy-seven thousand, eight hundred fifty-nine".