9871025 has 12 divisors (see below), whose sum is σ = 12772992. Its totient is φ = 7553040.

The previous prime is 9871007. The next prime is 9871027. The reversal of 9871025 is 5201789.

It is not a de Polignac number, because 9871025 - 2⁶ = 9870961 is a prime.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9870982 and 9871000.

It is not an unprimeable number, because it can be changed into a prime (9871027) 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 11 ways as a sum of consecutive naturals, for example, 8009 + ... + 9158.

It is an arithmetic number, because the mean of its divisors is an integer number (1064416).

Almost surely, 2^9871025 is an apocalyptic number.

It is an amenable number.

9871025 is a deficient number, since it is larger than the sum of its proper divisors (2901967).

9871025 is a wasteful number, since it uses less digits than its factorization.

9871025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17200 (or 17195 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 9871025 is about 3141.8187407933. The cubic root of 9871025 is about 214.5132308370.

The spelling of 9871025 in words is "nine million, eight hundred seventy-one thousand, twenty-five".