6625004845 has 16 divisors (see below), whose sum is σ = 8194410288. Its totient is φ = 5138104320.

The previous prime is 6625004821. The next prime is 6625004887. The reversal of 6625004845 is 5484005266.

It can be written as a sum of positive squares in 8 ways, for example, as 635947524 + 5989057321 = 25218^2 + 77389^2 .

It is not a de Polignac number, because 6625004845 - 2³¹ = 4477521197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6625004798 and 6625004807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13396 + ... + 115885.

It is an arithmetic number, because the mean of its divisors is an integer number (512150643).

Almost surely, 2^6625004845 is an apocalyptic number.

It is an amenable number.

6625004845 is a deficient number, since it is larger than the sum of its proper divisors (1569405443).

6625004845 is a wasteful number, since it uses less digits than its factorization.

6625004845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129600.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 6625004845 is about 81394.1327430915. The cubic root of 6625004845 is about 1878.1433349520.

The spelling of 6625004845 in words is "six billion, six hundred twenty-five million, four thousand, eight hundred forty-five".