6416625845 has 32 divisors (see below), whose sum is σ = 8996928768. Its totient is φ = 4302448128.

The previous prime is 6416625821. The next prime is 6416625883. The reversal of 6416625845 is 5485266146.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6416625845 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6416625845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 311279 + ... + 331251.

It is an arithmetic number, because the mean of its divisors is an integer number (281154024).

Almost surely, 2^6416625845 is an apocalyptic number.

It is an amenable number.

6416625845 is a deficient number, since it is larger than the sum of its proper divisors (2580302923).

6416625845 is a wasteful number, since it uses less digits than its factorization.

6416625845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20189.

The product of its digits is 1382400, while the sum is 47.

The square root of 6416625845 is about 80103.8441337243. The cubic root of 6416625845 is about 1858.2418586266.

The spelling of 6416625845 in words is "six billion, four hundred sixteen million, six hundred twenty-five thousand, eight hundred forty-five".