8649925 has 6 divisors (see below), whose sum is σ = 10725938. Its totient is φ = 6919920.

The previous prime is 8649911. The next prime is 8649929. The reversal of 8649925 is 5299468.

It can be written as a sum of positive squares in 3 ways, for example, as 2414916 + 6235009 = 1554^2 + 2497^2 .

It is not a de Polignac number, because 8649925 - 2¹³ = 8641733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8649929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172974 + ... + 173023.

Almost surely, 2^8649925 is an apocalyptic number.

It is an amenable number.

8649925 is a deficient number, since it is larger than the sum of its proper divisors (2076013).

8649925 is a wasteful number, since it uses less digits than its factorization.

8649925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346007 (or 346002 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 8649925 is about 2941.0754835604. The cubic root of 8649925 is about 205.2756553460.

The spelling of 8649925 in words is "eight million, six hundred forty-nine thousand, nine hundred twenty-five".