9925649 has 8 divisors (see below), whose sum is σ = 10265640. Its totient is φ = 9590400.

The previous prime is 9925633. The next prime is 9925667. The reversal of 9925649 is 9465299.

It can be written as a sum of positive squares in 4 ways, for example, as 883600 + 9042049 = 940^2 + 3007^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9925649 - 2⁴ = 9925633 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9985649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3359 + ... + 5579.

It is an arithmetic number, because the mean of its divisors is an integer number (1283205).

Almost surely, 2^9925649 is an apocalyptic number.

It is an amenable number.

9925649 is a deficient number, since it is larger than the sum of its proper divisors (339991).

9925649 is a wasteful number, since it uses less digits than its factorization.

9925649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371.

The product of its digits is 174960, while the sum is 44.

The square root of 9925649 is about 3150.4998016188. The cubic root of 9925649 is about 214.9081922790.

The spelling of 9925649 in words is "nine million, nine hundred twenty-five thousand, six hundred forty-nine".