255220115 has 4 divisors (see below), whose sum is σ = 306264144. Its totient is φ = 204176088.

The previous prime is 255220111. The next prime is 255220129. The reversal of 255220115 is 511022552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 255220115 - 2² = 255220111 is a prime.

It is a super-2 number, since 2×255220115² = 130274614201226450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (255220111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25522007 + ... + 25522016.

It is an arithmetic number, because the mean of its divisors is an integer number (76566036).

Almost surely, 2^255220115 is an apocalyptic number.

255220115 is a deficient number, since it is larger than the sum of its proper divisors (51044029).

255220115 is an equidigital number, since it uses as much as digits as its factorization.

255220115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51044028.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 255220115 is about 15975.6100040030. The cubic root of 255220115 is about 634.3149783134.

Adding to 255220115 its reverse (511022552), we get a palindrome (766242667).

The spelling of 255220115 in words is "two hundred fifty-five million, two hundred twenty thousand, one hundred fifteen".