1255255535 has 4 divisors (see below), whose sum is σ = 1506306648. Its totient is φ = 1004204424.

The previous prime is 1255255523. The next prime is 1255255543. The reversal of 1255255535 is 5355525521.

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

It is a cyclic number.

It is not a de Polignac number, because 1255255535 - 2⁶ = 1255255471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 125525549 + ... + 125525558.

It is an arithmetic number, because the mean of its divisors is an integer number (376576662).

Almost surely, 2^1255255535 is an apocalyptic number.

1255255535 is a deficient number, since it is larger than the sum of its proper divisors (251051113).

1255255535 is an equidigital number, since it uses as much as digits as its factorization.

1255255535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251051112.

The product of its digits is 187500, while the sum is 38.

The square root of 1255255535 is about 35429.5855888832. The cubic root of 1255255535 is about 1078.7249283998.

The spelling of 1255255535 in words is "one billion, two hundred fifty-five million, two hundred fifty-five thousand, five hundred thirty-five".