1255287516775 has 24 divisors (see below), whose sum is σ = 1575094749984. Its totient is φ = 992309424000.

The previous prime is 1255287516773. The next prime is 1255287516787. The reversal of 1255287516775 is 5776157825521.

It is not a de Polignac number, because 1255287516775 - 2¹ = 1255287516773 is a prime.

It is a super-2 number, since 2×1255287516775² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255287516773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 775897 + ... + 1764253.

It is an arithmetic number, because the mean of its divisors is an integer number (65628947916).

Almost surely, 2^{1255287516775} is an apocalyptic number.

1255287516775 is a deficient number, since it is larger than the sum of its proper divisors (319807233209).

1255287516775 is a wasteful number, since it uses less digits than its factorization.

1255287516775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988971 (or 988966 counting only the distinct ones).

The product of its digits is 41160000, while the sum is 61.

The spelling of 1255287516775 in words is "one trillion, two hundred fifty-five billion, two hundred eighty-seven million, five hundred sixteen thousand, seven hundred seventy-five".