1125855 has 24 divisors (see below), whose sum is σ = 1976832. Its totient is φ = 592704.

The previous prime is 1125833. The next prime is 1125857. The reversal of 1125855 is 5585211.

It is not a de Polignac number, because 1125855 - 2⁵ = 1125823 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5617 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (82368).

2^1125855 is an apocalyptic number.

1125855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1125855 is a deficient number, since it is larger than the sum of its proper divisors (850977).

1125855 is a wasteful number, since it uses less digits than its factorization.

1125855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 332 counting only the distinct ones).

The product of its digits is 2000, while the sum is 27.

The square root of 1125855 is about 1061.0631460945. The cubic root of 1125855 is about 104.0305322091.

The spelling of 1125855 in words is "one million, one hundred twenty-five thousand, eight hundred fifty-five".