255661255 has 8 divisors (see below), whose sum is σ = 306953424. Its totient is φ = 204422400.

The previous prime is 255661229. The next prime is 255661277. The reversal of 255661255 is 552166552.

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

It is not a de Polignac number, because 255661255 - 2⁵ = 255661223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1881 + ... + 22690.

It is an arithmetic number, because the mean of its divisors is an integer number (38369178).

Almost surely, 2^255661255 is an apocalyptic number.

255661255 is a deficient number, since it is larger than the sum of its proper divisors (51292169).

255661255 is a wasteful number, since it uses less digits than its factorization.

255661255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26657.

The product of its digits is 90000, while the sum is 37.

The square root of 255661255 is about 15989.4107145948. The cubic root of 255661255 is about 634.6802324955.

The spelling of 255661255 in words is "two hundred fifty-five million, six hundred sixty-one thousand, two hundred fifty-five".