1125589 has 4 divisors (see below), whose sum is σ = 1129024. Its totient is φ = 1122156.

The previous prime is 1125581. The next prime is 1125599. The reversal of 1125589 is 9855211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9855211 = 41 ⋅240371.

It is a cyclic number.

It is not a de Polignac number, because 1125589 - 2³ = 1125581 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1125589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125581) 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, 1167 + ... + 1900.

It is an arithmetic number, because the mean of its divisors is an integer number (282256).

2^1125589 is an apocalyptic number.

It is an amenable number.

1125589 is a deficient number, since it is larger than the sum of its proper divisors (3435).

1125589 is an equidigital number, since it uses as much as digits as its factorization.

1125589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434.

The product of its digits is 3600, while the sum is 31.

The square root of 1125589 is about 1060.9377927098. The cubic root of 1125589 is about 104.0223386433.

It can be divided in two parts, 11 and 25589, that added together give a square (25600 = 160²).

The spelling of 1125589 in words is "one million, one hundred twenty-five thousand, five hundred eighty-nine".