1255011513 has 16 divisors (see below), whose sum is σ = 1923855360. Its totient is φ = 712853136.

The previous prime is 1255011493. The next prime is 1255011523. The reversal of 1255011513 is 3151105521.

It is not a de Polignac number, because 1255011513 - 2⁵ = 1255011481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255011523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175423 + ... + 182436.

It is an arithmetic number, because the mean of its divisors is an integer number (120240960).

Almost surely, 2^1255011513 is an apocalyptic number.

It is an amenable number.

1255011513 is a deficient number, since it is larger than the sum of its proper divisors (668843847).

1255011513 is a wasteful number, since it uses less digits than its factorization.

1255011513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358036.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 1255011513 is about 35426.1416612083. The cubic root of 1255011513 is about 1078.6550224015.

The spelling of 1255011513 in words is "one billion, two hundred fifty-five million, eleven thousand, five hundred thirteen".