9125452909 has 4 divisors (see below), whose sum is σ = 9126266940. Its totient is φ = 9124638880.

The previous prime is 9125452877. The next prime is 9125452937. The reversal of 9125452909 is 9092545219.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9092545219 = 23 ⋅395328053.

It can be written as a sum of positive squares in 2 ways, for example, as 4101762025 + 5023690884 = 64045^2 + 70878^2 .

It is a cyclic number.

It is not a de Polignac number, because 9125452909 - 2⁵ = 9125452877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9125452969) 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, 389962 + ... + 412699.

It is an arithmetic number, because the mean of its divisors is an integer number (2281566735).

Almost surely, 2^9125452909 is an apocalyptic number.

It is an amenable number.

9125452909 is a deficient number, since it is larger than the sum of its proper divisors (814031).

9125452909 is a wasteful number, since it uses less digits than its factorization.

9125452909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814030.

The product of its (nonzero) digits is 291600, while the sum is 46.

The square root of 9125452909 is about 95527.2364773524. The cubic root of 9125452909 is about 2089.7041704102.

The spelling of 9125452909 in words is "nine billion, one hundred twenty-five million, four hundred fifty-two thousand, nine hundred nine".