9985525 has 18 divisors (see below), whose sum is σ = 13614146. Its totient is φ = 7260000.

The previous prime is 9985501. The next prime is 9985553. The reversal of 9985525 is 5255899.

It can be written as a sum of positive squares in 3 ways, for example, as 88209 + 9897316 = 297^2 + 3146^2 .

It is not a de Polignac number, because 9985525 - 2⁷ = 9985397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1375 + ... + 4675.

Almost surely, 2^9985525 is an apocalyptic number.

It is an amenable number.

9985525 is a deficient number, since it is larger than the sum of its proper divisors (3628621).

9985525 is a wasteful number, since it uses less digits than its factorization.

9985525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333 (or 3317 counting only the distinct ones).

The product of its digits is 162000, while the sum is 43.

The square root of 9985525 is about 3159.9881328891. The cubic root of 9985525 is about 215.3394673324.

The spelling of 9985525 in words is "nine million, nine hundred eighty-five thousand, five hundred twenty-five".