255989604 has 48 divisors (see below), whose sum is σ = 681101568. Its totient is φ = 74131968.

The previous prime is 255989593. The next prime is 255989633. The reversal of 255989604 is 406989552.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45612 + ... + 50915.

It is an arithmetic number, because the mean of its divisors is an integer number (14189616).

Almost surely, 2^255989604 is an apocalyptic number.

It is an amenable number.

255989604 is an abundant number, since it is smaller than the sum of its proper divisors (425111964).

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

255989604 is a wasteful number, since it uses less digits than its factorization.

255989604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96564 (or 96562 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 48.

The square root of 255989604 is about 15999.6751217017. The cubic root of 255989604 is about 634.9518255557.

The spelling of 255989604 in words is "two hundred fifty-five million, nine hundred eighty-nine thousand, six hundred four".