1145289255 has 32 divisors (see below), whose sum is σ = 2085972480. Its totient is φ = 531146880.

The previous prime is 1145289169. The next prime is 1145289263. The reversal of 1145289255 is 5529825411.

It is not a de Polignac number, because 1145289255 - 2⁸ = 1145288999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147100 + ... + 154689.

It is an arithmetic number, because the mean of its divisors is an integer number (65186640).

Almost surely, 2^1145289255 is an apocalyptic number.

1145289255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1145289255 is a deficient number, since it is larger than the sum of its proper divisors (940683225).

1145289255 is a wasteful number, since it uses less digits than its factorization.

1145289255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301831.

The product of its digits is 144000, while the sum is 42.

The square root of 1145289255 is about 33842.1224954937. The cubic root of 1145289255 is about 1046.2570451544.

The spelling of 1145289255 in words is "one billion, one hundred forty-five million, two hundred eighty-nine thousand, two hundred fifty-five".