255405996 has 18 divisors (see below), whose sum is σ = 645609692. Its totient is φ = 85135320.

The previous prime is 255405991. The next prime is 255406003. The reversal of 255405996 is 699504552.

It is a happy number.

255405996 is a `hidden beast` number, since 2 + 5 + 54 + 0 + 599 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (255405991) 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 5 ways as a sum of consecutive naturals, for example, 3547270 + ... + 3547341.

Almost surely, 2^255405996 is an apocalyptic number.

It is an amenable number.

255405996 is an abundant number, since it is smaller than the sum of its proper divisors (390203696).

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

255405996 is a wasteful number, since it uses less digits than its factorization.

255405996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7094621 (or 7094616 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The square root of 255405996 is about 15981.4265946442. The cubic root of 255405996 is about 634.4689349474.

The spelling of 255405996 in words is "two hundred fifty-five million, four hundred five thousand, nine hundred ninety-six".