1256958827 has 2 divisors, whose sum is σ = 1256958828. Its totient is φ = 1256958826.

The previous prime is 1256958823. The next prime is 1256958839. The reversal of 1256958827 is 7288596521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1256958827 - 2² = 1256958823 is a prime.

It is not a weakly prime, because it can be changed into another prime (1256958823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628479413 + 628479414.

It is an arithmetic number, because the mean of its divisors is an integer number (628479414).

Almost surely, 2^1256958827 is an apocalyptic number.

1256958827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1256958827 is an equidigital number, since it uses as much as digits as its factorization.

1256958827 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 53.

The square root of 1256958827 is about 35453.6151471186. The cubic root of 1256958827 is about 1079.2126254063.

The spelling of 1256958827 in words is "one billion, two hundred fifty-six million, nine hundred fifty-eight thousand, eight hundred twenty-seven".