255665015 has 8 divisors (see below), whose sum is σ = 317377440. Its totient is φ = 197479072.

The previous prime is 255664999. The next prime is 255665129. The reversal of 255665015 is 510566552.

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 255665015 - 2⁴ = 255664999 is a prime.

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, 881459 + ... + 881748.

It is an arithmetic number, because the mean of its divisors is an integer number (39672180).

Almost surely, 2^255665015 is an apocalyptic number.

255665015 is a deficient number, since it is larger than the sum of its proper divisors (61712425).

255665015 is a wasteful number, since it uses less digits than its factorization.

255665015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763241.

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 255665015 is about 15989.5282919791. The cubic root of 255665015 is about 634.6833438860.

The spelling of 255665015 in words is "two hundred fifty-five million, six hundred sixty-five thousand, fifteen".