1125530609 has 8 divisors (see below), whose sum is σ = 1327815168. Its totient is φ = 933619680.

The previous prime is 1125530603. The next prime is 1125530663. The reversal of 1125530609 is 9060355211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1125530609 - 2¹⁶ = 1125465073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1125530603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593172 + ... + 2593605.

It is an arithmetic number, because the mean of its divisors is an integer number (165976896).

Almost surely, 2^1125530609 is an apocalyptic number.

It is an amenable number.

1125530609 is a deficient number, since it is larger than the sum of its proper divisors (202284559).

1125530609 is an equidigital number, since it uses as much as digits as its factorization.

1125530609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186815.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 1125530609 is about 33548.9285819980. The cubic root of 1125530609 is about 1040.2053985956.

The spelling of 1125530609 in words is "one billion, one hundred twenty-five million, five hundred thirty thousand, six hundred nine".