1255701682891 has 4 divisors (see below), whose sum is σ = 1255971789000. Its totient is φ = 1255431576784.

The previous prime is 1255701682847. The next prime is 1255701682967. The reversal of 1255701682891 is 1982861075521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1255701682891 - 2¹¹ = 1255701680843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1255701685891) 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, 135046081 + ... + 135055378.

It is an arithmetic number, because the mean of its divisors is an integer number (313992947250).

Almost surely, 2^{1255701682891} is an apocalyptic number.

1255701682891 is a deficient number, since it is larger than the sum of its proper divisors (270106109).

1255701682891 is an equidigital number, since it uses as much as digits as its factorization.

1255701682891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270106108.

The product of its (nonzero) digits is 2419200, while the sum is 55.

The spelling of 1255701682891 in words is "one trillion, two hundred fifty-five billion, seven hundred one million, six hundred eighty-two thousand, eight hundred ninety-one".