255995615 has 16 divisors (see below), whose sum is σ = 320237280. Its totient is φ = 196210560.

The previous prime is 255995609. The next prime is 255995617. The reversal of 255995615 is 516599552.

It is not a de Polignac number, because 255995615 - 2⁴ = 255995599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 255995615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255995617) 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 15 ways as a sum of consecutive naturals, for example, 12257 + ... + 25733.

It is an arithmetic number, because the mean of its divisors is an integer number (20014830).

Almost surely, 2^255995615 is an apocalyptic number.

255995615 is a deficient number, since it is larger than the sum of its proper divisors (64241665).

255995615 is a wasteful number, since it uses less digits than its factorization.

255995615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13642.

The product of its digits is 607500, while the sum is 47.

The square root of 255995615 is about 15999.8629681632. The cubic root of 255995615 is about 634.9567953741.

The spelling of 255995615 in words is "two hundred fifty-five million, nine hundred ninety-five thousand, six hundred fifteen".