6442625 has 32 divisors (see below), whose sum is σ = 9484800. Its totient is φ = 4276800.

The previous prime is 6442613. The next prime is 6442633. The reversal of 6442625 is 5262446.

6442625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6442625 - 2¹⁰ = 6441601 is a prime.

It is a d-powerful number, because it can be written as 6² + 4⁹ + 4¹¹ + 2⁵ + 6³ + 2¹⁵ + 5⁹ .

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, 32276 + ... + 32474.

It is an arithmetic number, because the mean of its divisors is an integer number (296400).

Almost surely, 2^6442625 is an apocalyptic number.

It is an amenable number.

6442625 is a deficient number, since it is larger than the sum of its proper divisors (3042175).

6442625 is a wasteful number, since it uses less digits than its factorization.

6442625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 248 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

The square root of 6442625 is about 2538.2326528512. The cubic root of 6442625 is about 186.0748244066.

The spelling of 6442625 in words is "six million, four hundred forty-two thousand, six hundred twenty-five".