6408625 has 16 divisors (see below), whose sum is σ = 8072064. Its totient is φ = 5079600.

The previous prime is 6408593. The next prime is 6408631. The reversal of 6408625 is 5268046.

It is not a de Polignac number, because 6408625 - 2⁵ = 6408593 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20722 + ... + 21028.

It is an arithmetic number, because the mean of its divisors is an integer number (504504).

Almost surely, 2^6408625 is an apocalyptic number.

It is an amenable number.

6408625 is a deficient number, since it is larger than the sum of its proper divisors (1663439).

6408625 is a wasteful number, since it uses less digits than its factorization.

6408625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 479 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 6408625 is about 2531.5262194968. The cubic root of 6408625 is about 185.7469194555.

The spelling of 6408625 in words is "six million, four hundred eight thousand, six hundred twenty-five".