255687965 has 16 divisors (see below), whose sum is σ = 330777216. Its totient is φ = 188616000.

The previous prime is 255687947. The next prime is 255687967. The reversal of 255687965 is 569786552.

It is not a de Polignac number, because 255687965 - 2¹⁶ = 255622429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255687967) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 92960 + ... + 95670.

It is an arithmetic number, because the mean of its divisors is an integer number (20673576).

Almost surely, 2^255687965 is an apocalyptic number.

It is an amenable number.

255687965 is a deficient number, since it is larger than the sum of its proper divisors (75089251).

255687965 is a wasteful number, since it uses less digits than its factorization.

255687965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180.

The product of its digits is 4536000, while the sum is 53.

The square root of 255687965 is about 15990.2459330681. The cubic root of 255687965 is about 634.7023342915.

It can be divided in two parts, 255687 and 965, that added together give a palindrome (256652).

The spelling of 255687965 in words is "two hundred fifty-five million, six hundred eighty-seven thousand, nine hundred sixty-five".