255402666 has 32 divisors (see below), whose sum is σ = 568509120. Its totient is φ = 84992112.

The previous prime is 255402613. The next prime is 255402673. The reversal of 255402666 is 666204552.

255402666 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 255402666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31641 + ... + 38883.

It is an arithmetic number, because the mean of its divisors is an integer number (17765910).

Almost surely, 2^255402666 is an apocalyptic number.

255402666 is an abundant number, since it is smaller than the sum of its proper divisors (313106454).

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

255402666 is a wasteful number, since it uses less digits than its factorization.

255402666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7907 (or 7901 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 255402666 is about 15981.3224108645. The cubic root of 255402666 is about 634.4661775196.

The spelling of 255402666 in words is "two hundred fifty-five million, four hundred two thousand, six hundred sixty-six".