1165040255 has 16 divisors (see below), whose sum is σ = 1439769600. Its totient is φ = 904619040.

The previous prime is 1165040251. The next prime is 1165040299. The reversal of 1165040255 is 5520405611.

It is a happy number.

It is not a de Polignac number, because 1165040255 - 2² = 1165040251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165040251) 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, 1691 + ... + 48300.

It is an arithmetic number, because the mean of its divisors is an integer number (89985600).

Almost surely, 2^1165040255 is an apocalyptic number.

1165040255 is a deficient number, since it is larger than the sum of its proper divisors (274729345).

1165040255 is an equidigital number, since it uses as much as digits as its factorization.

1165040255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50134.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1165040255 is about 34132.6860208803. The cubic root of 1165040255 is about 1052.2371815907.

Adding to 1165040255 its reverse (5520405611), we get a palindrome (6685445866).

The spelling of 1165040255 in words is "one billion, one hundred sixty-five million, forty thousand, two hundred fifty-five".