1255594958891 has 16 divisors (see below), whose sum is σ = 1545475276800. Its totient is φ = 993355718688.

The previous prime is 1255594958879. The next prime is 1255594958929. The reversal of 1255594958891 is 1988594955521.

It is a cyclic number.

It is not a de Polignac number, because 1255594958891 - 2¹⁸ = 1255594696747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255594948891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550070 + ... + 1677428.

It is an arithmetic number, because the mean of its divisors is an integer number (96592204800).

Almost surely, 2^{1255594958891} is an apocalyptic number.

1255594958891 is a deficient number, since it is larger than the sum of its proper divisors (289880317909).

1255594958891 is a wasteful number, since it uses less digits than its factorization.

1255594958891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139618.

The product of its digits is 233280000, while the sum is 71.

The spelling of 1255594958891 in words is "one trillion, two hundred fifty-five billion, five hundred ninety-four million, nine hundred fifty-eight thousand, eight hundred ninety-one".