255785136 has 20 divisors (see below), whose sum is σ = 660778392. Its totient is φ = 85261696.

The previous prime is 255785129. The next prime is 255785137. The reversal of 255785136 is 631587552.

It is not an unprimeable number, because it can be changed into a prime (255785137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2664381 + ... + 2664476.

Almost surely, 2^255785136 is an apocalyptic number.

It is an amenable number.

255785136 is an abundant number, since it is smaller than the sum of its proper divisors (404993256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255785136 is a wasteful number, since it uses less digits than its factorization.

255785136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5328868 (or 5328862 counting only the distinct ones).

The product of its digits is 252000, while the sum is 42.

The square root of 255785136 is about 15993.2840905175. The cubic root of 255785136 is about 634.7827276586.

The spelling of 255785136 in words is "two hundred fifty-five million, seven hundred eighty-five thousand, one hundred thirty-six".