9870925 has 6 divisors (see below), whose sum is σ = 12239978. Its totient is φ = 7896720.

The previous prime is 9870911. The next prime is 9870943. The reversal of 9870925 is 5290789.

It can be written as a sum of positive squares in 3 ways, for example, as 155236 + 9715689 = 394^2 + 3117^2 .

It is not a de Polignac number, because 9870925 - 2⁷ = 9870797 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 197394 + ... + 197443.

Almost surely, 2^9870925 is an apocalyptic number.

It is an amenable number.

9870925 is a deficient number, since it is larger than the sum of its proper divisors (2369053).

9870925 is a wasteful number, since it uses less digits than its factorization.

9870925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394847 (or 394842 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 9870925 is about 3141.8028264040. The cubic root of 9870925 is about 214.5125064476.

The spelling of 9870925 in words is "nine million, eight hundred seventy thousand, nine hundred twenty-five".