1275425843 has 2 divisors, whose sum is σ = 1275425844. Its totient is φ = 1275425842.

The previous prime is 1275425819. The next prime is 1275425861. The reversal of 1275425843 is 3485245721.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1275425843 - 2⁸ = 1275425587 is a prime.

It is a super-2 number, since 2×1275425843² = 3253422161984521298, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1275425843.

It is not a weakly prime, because it can be changed into another prime (1275425873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637712921 + 637712922.

It is an arithmetic number, because the mean of its divisors is an integer number (637712922).

Almost surely, 2^1275425843 is an apocalyptic number.

1275425843 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275425843 is an equidigital number, since it uses as much as digits as its factorization.

1275425843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 268800, while the sum is 41.

The square root of 1275425843 is about 35713.1046396137. The cubic root of 1275425843 is about 1084.4721516636.

The spelling of 1275425843 in words is "one billion, two hundred seventy-five million, four hundred twenty-five thousand, eight hundred forty-three".