255744985 has 8 divisors (see below), whose sum is σ = 307512000. Its totient is φ = 204183984.

The previous prime is 255744977. The next prime is 255745033. The reversal of 255744985 is 589447552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 255744985 - 2³ = 255744977 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 48757 + ... + 53746.

It is an arithmetic number, because the mean of its divisors is an integer number (38439000).

Almost surely, 2^255744985 is an apocalyptic number.

It is an amenable number.

255744985 is a deficient number, since it is larger than the sum of its proper divisors (51767015).

255744985 is a wasteful number, since it uses less digits than its factorization.

255744985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103007.

The product of its digits is 2016000, while the sum is 49.

The square root of 255744985 is about 15992.0287956219. The cubic root of 255744985 is about 634.7495116354.

The spelling of 255744985 in words is "two hundred fifty-five million, seven hundred forty-four thousand, nine hundred eighty-five".