255012661 has 32 divisors (see below), whose sum is σ = 294497280. Its totient is φ = 219542400.

The previous prime is 255012601. The next prime is 255012697. The reversal of 255012661 is 166210552.

It is a cyclic number.

It is not a de Polignac number, because 255012661 - 2⁷ = 255012533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255012601) 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 31 ways as a sum of consecutive naturals, for example, 770266 + ... + 770596.

It is an arithmetic number, because the mean of its divisors is an integer number (9203040).

Almost surely, 2^255012661 is an apocalyptic number.

It is an amenable number.

255012661 is a deficient number, since it is larger than the sum of its proper divisors (39484619).

255012661 is a wasteful number, since it uses less digits than its factorization.

255012661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 255012661 is about 15969.1158490381. The cubic root of 255012661 is about 634.1430654661.

The spelling of 255012661 in words is "two hundred fifty-five million, twelve thousand, six hundred sixty-one".