1125880 has 32 divisors (see below), whose sum is σ = 2895840. Its totient is φ = 385920.

The previous prime is 1125871. The next prime is 1125899. The reversal of 1125880 is 885211.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (90495).

2^1125880 is an apocalyptic number.

1125880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125880 is an abundant number, since it is smaller than the sum of its proper divisors (1769960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1125880 is a wasteful number, since it uses less digits than its factorization.

1125880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4039 (or 4035 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1125880 is about 1061.0749266663. The cubic root of 1125880 is about 104.0313022147.

The spelling of 1125880 in words is "one million, one hundred twenty-five thousand, eight hundred eighty".