6444328925 has 12 divisors (see below), whose sum is σ = 8043892896. Its totient is φ = 5121318000.

The previous prime is 6444328901. The next prime is 6444328927. The reversal of 6444328925 is 5298234446.

It is not a de Polignac number, because 6444328925 - 2¹⁴ = 6444312541 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6444328925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444328927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 849779 + ... + 857328.

It is an arithmetic number, because the mean of its divisors is an integer number (670324408).

Almost surely, 2^6444328925 is an apocalyptic number.

It is an amenable number.

6444328925 is a deficient number, since it is larger than the sum of its proper divisors (1599563971).

6444328925 is a wasteful number, since it uses less digits than its factorization.

6444328925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707268 (or 1707263 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 47.

The square root of 6444328925 is about 80276.5776861470. The cubic root of 6444328925 is about 1860.9122712017.

The spelling of 6444328925 in words is "six billion, four hundred forty-four million, three hundred twenty-eight thousand, nine hundred twenty-five".