1255311523013 has 4 divisors (see below), whose sum is σ = 1321380550560. Its totient is φ = 1189242495468.

The previous prime is 1255311523009. The next prime is 1255311523043. The reversal of 1255311523013 is 3103251135521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1255311523013 - 2² = 1255311523009 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 (1255311523043) 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, 33034513745 + ... + 33034513782.

It is an arithmetic number, because the mean of its divisors is an integer number (330345137640).

Almost surely, 2^{1255311523013} is an apocalyptic number.

It is an amenable number.

1255311523013 is a deficient number, since it is larger than the sum of its proper divisors (66069027547).

1255311523013 is an equidigital number, since it uses as much as digits as its factorization.

1255311523013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66069027546.

The product of its (nonzero) digits is 13500, while the sum is 32.

Adding to 1255311523013 its reverse (3103251135521), we get a palindrome (4358562658534).

The spelling of 1255311523013 in words is "one trillion, two hundred fifty-five billion, three hundred eleven million, five hundred twenty-three thousand, thirteen".