1256850079 has 4 divisors (see below), whose sum is σ = 1270972080. Its totient is φ = 1242728080.

The previous prime is 1256850073. The next prime is 1256850113. The reversal of 1256850079 is 9700586521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9700586521 = 60923 ⋅159227.

It is a cyclic number.

It is not a de Polignac number, because 1256850079 - 2⁹ = 1256849567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256850073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7060867 + ... + 7061044.

It is an arithmetic number, because the mean of its divisors is an integer number (317743020).

Almost surely, 2^1256850079 is an apocalyptic number.

1256850079 is a deficient number, since it is larger than the sum of its proper divisors (14122001).

1256850079 is an equidigital number, since it uses as much as digits as its factorization.

1256850079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14122000.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1256850079 is about 35452.0814480617. The cubic root of 1256850079 is about 1079.1815011836.

The spelling of 1256850079 in words is "one billion, two hundred fifty-six million, eight hundred fifty thousand, seventy-nine".