255242415 has 16 divisors (see below), whose sum is σ = 408647808. Its totient is φ = 136042656.

The previous prime is 255242389. The next prime is 255242417. The reversal of 255242415 is 514242552.

It is not a de Polignac number, because 255242415 - 2⁷ = 255242287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255242417) 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, 24144 + ... + 33066.

It is an arithmetic number, because the mean of its divisors is an integer number (25540488).

Almost surely, 2^255242415 is an apocalyptic number.

255242415 is a deficient number, since it is larger than the sum of its proper divisors (153405393).

255242415 is a wasteful number, since it uses less digits than its factorization.

255242415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838.

The product of its digits is 16000, while the sum is 30.

The square root of 255242415 is about 15976.3079276784. The cubic root of 255242415 is about 634.3334523171. Note that the first 3 decimals are identical.

Adding to 255242415 its reverse (514242552), we get a palindrome (769484967).

The spelling of 255242415 in words is "two hundred fifty-five million, two hundred forty-two thousand, four hundred fifteen".