1255506113 has 4 divisors (see below), whose sum is σ = 1256425920. Its totient is φ = 1254586308.

The previous prime is 1255506047. The next prime is 1255506143. The reversal of 1255506113 is 3116055521.

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 1255506113 - 2¹⁰ = 1255505089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1255506143) 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, 457853 + ... + 460586.

It is an arithmetic number, because the mean of its divisors is an integer number (314106480).

Almost surely, 2^1255506113 is an apocalyptic number.

It is an amenable number.

1255506113 is a deficient number, since it is larger than the sum of its proper divisors (919807).

1255506113 is an equidigital number, since it uses as much as digits as its factorization.

1255506113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919806.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1255506113 is about 35433.1216942566. The cubic root of 1255506113 is about 1078.7967030951.

The spelling of 1255506113 in words is "one billion, two hundred fifty-five million, five hundred six thousand, one hundred thirteen".