9867825 has 60 divisors (see below), whose sum is σ = 19985328. Its totient is φ = 4773600.

The previous prime is 9867817. The next prime is 9867841. The reversal of 9867825 is 5287689.

It is not a de Polignac number, because 9867825 - 2³ = 9867817 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 22054 + ... + 22496.

Almost surely, 2^9867825 is an apocalyptic number.

It is an amenable number.

9867825 is an abundant number, since it is smaller than the sum of its proper divisors (10117503).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9867825 is a wasteful number, since it uses less digits than its factorization.

9867825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 462 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 9867825 is about 3141.3094403449. The cubic root of 9867825 is about 214.4900479514.

The spelling of 9867825 in words is "nine million, eight hundred sixty-seven thousand, eight hundred twenty-five".