1252858643 has 2 divisors, whose sum is σ = 1252858644. Its totient is φ = 1252858642.

The previous prime is 1252858567. The next prime is 1252858657. The reversal of 1252858643 is 3468582521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1252858643 - 2¹⁶ = 1252793107 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252858594 and 1252858603.

It is not a weakly prime, because it can be changed into another prime (1252858543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626429321 + 626429322.

It is an arithmetic number, because the mean of its divisors is an integer number (626429322).

Almost surely, 2^1252858643 is an apocalyptic number.

1252858643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252858643 is an equidigital number, since it uses as much as digits as its factorization.

1252858643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 460800, while the sum is 44.

The square root of 1252858643 is about 35395.7432892714. The cubic root of 1252858643 is about 1078.0378877825.

The spelling of 1252858643 in words is "one billion, two hundred fifty-two million, eight hundred fifty-eight thousand, six hundred forty-three".