255012666 has 8 divisors (see below), whose sum is σ = 510025344. Its totient is φ = 85004220.

The previous prime is 255012601. The next prime is 255012697. The reversal of 255012666 is 666210552.

It is a happy number.

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

255012666 is an admirable number.

It is an unprimeable number.

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, 21251050 + ... + 21251061.

It is an arithmetic number, because the mean of its divisors is an integer number (63753168).

Almost surely, 2^255012666 is an apocalyptic number.

255012666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

255012666 is a wasteful number, since it uses less digits than its factorization.

255012666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42502116.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 255012666 is about 15969.1160055903. The cubic root of 255012666 is about 634.1430696106.

The spelling of 255012666 in words is "two hundred fifty-five million, twelve thousand, six hundred sixty-six".