6609925 has 24 divisors (see below), whose sum is σ = 9481536. Its totient is φ = 4477440.

The previous prime is 6609893. The next prime is 6609971. The reversal of 6609925 is 5299066.

It is a happy number.

It is not a de Polignac number, because 6609925 - 2⁵ = 6609893 is a prime.

It is a super-2 number, since 2×6609925² = 87382217011250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18549 + ... + 18901.

It is an arithmetic number, because the mean of its divisors is an integer number (395064).

Almost surely, 2^6609925 is an apocalyptic number.

It is an amenable number.

6609925 is a deficient number, since it is larger than the sum of its proper divisors (2871611).

6609925 is a wasteful number, since it uses less digits than its factorization.

6609925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 472 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 6609925 is about 2570.9774405856. The cubic root of 6609925 is about 187.6717241578.

It can be divided in two parts, 660 and 9925, that added together give a triangular number (10585 = T₁₄₅).

The spelling of 6609925 in words is "six million, six hundred nine thousand, nine hundred twenty-five".