1255985556326 has 4 divisors (see below), whose sum is σ = 1883978334492. Its totient is φ = 627992778162.

The previous prime is 1255985556311. The next prime is 1255985556443. The reversal of 1255985556326 is 6236555895521.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313996389080 + ... + 313996389083.

It is an arithmetic number, because the mean of its divisors is an integer number (470994583623).

Almost surely, 2^{1255985556326} is an apocalyptic number.

1255985556326 is a deficient number, since it is larger than the sum of its proper divisors (627992778166).

1255985556326 is an equidigital number, since it uses as much as digits as its factorization.

1255985556326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627992778165.

The product of its digits is 97200000, while the sum is 62.

The spelling of 1255985556326 in words is "one trillion, two hundred fifty-five billion, nine hundred eighty-five million, five hundred fifty-six thousand, three hundred twenty-six".