1256675047 has 4 divisors (see below), whose sum is σ = 1256758200. Its totient is φ = 1256591896.

The previous prime is 1256675039. The next prime is 1256675083. The reversal of 1256675047 is 7405766521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1256675047 - 2³ = 1256675039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1256674994 and 1256675012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256672047) 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 in 3 ways as a sum of consecutive naturals, for example, 11797 + ... + 51502.

It is an arithmetic number, because the mean of its divisors is an integer number (314189550).

Almost surely, 2^1256675047 is an apocalyptic number.

1256675047 is a deficient number, since it is larger than the sum of its proper divisors (83153).

1256675047 is an equidigital number, since it uses as much as digits as its factorization.

1256675047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83152.

The product of its (nonzero) digits is 352800, while the sum is 43.

The square root of 1256675047 is about 35449.6127905510. The cubic root of 1256675047 is about 1079.1314023774.

The spelling of 1256675047 in words is "one billion, two hundred fifty-six million, six hundred seventy-five thousand, forty-seven".