255105215 has 8 divisors (see below), whose sum is σ = 306535200. Its totient is φ = 203811552.

The previous prime is 255105209. The next prime is 255105223. The reversal of 255105215 is 512501552.

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

It is a cyclic number.

It is not a de Polignac number, because 255105215 - 2⁸ = 255104959 is a prime.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 29915 + ... + 37484.

It is an arithmetic number, because the mean of its divisors is an integer number (38316900).

Almost surely, 2^255105215 is an apocalyptic number.

255105215 is a deficient number, since it is larger than the sum of its proper divisors (51429985).

255105215 is an equidigital number, since it uses as much as digits as its factorization.

255105215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68161.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 255105215 is about 15972.0134923559. The cubic root of 255105215 is about 634.2197745700.

Adding to 255105215 its reverse (512501552), we get a palindrome (767606767).

The spelling of 255105215 in words is "two hundred fifty-five million, one hundred five thousand, two hundred fifteen".