8709825 has 12 divisors (see below), whose sum is σ = 14400368. Its totient is φ = 4645200.

The previous prime is 8709821. The next prime is 8709839. The reversal of 8709825 is 5289078.

It is not a de Polignac number, because 8709825 - 2² = 8709821 is a prime.

It is a super-2 number, since 2×8709825² = 151722103061250, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8709821) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57991 + ... + 58140.

Almost surely, 2^8709825 is an apocalyptic number.

It is an amenable number.

8709825 is a deficient number, since it is larger than the sum of its proper divisors (5690543).

8709825 is a wasteful number, since it uses less digits than its factorization.

8709825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116144 (or 116139 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 8709825 is about 2951.2412642819. The cubic root of 8709825 is about 205.7484046280.

The spelling of 8709825 in words is "eight million, seven hundred nine thousand, eight hundred twenty-five".