9820525 has 48 divisors (see below), whose sum is σ = 14874048. Its totient is φ = 6336000.

The previous prime is 9820523. The next prime is 9820537. The reversal of 9820525 is 5250289.

It is a happy number.

It is not a de Polignac number, because 9820525 - 2¹ = 9820523 is a prime.

It is a super-2 number, since 2×9820525² = 192885422551250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9820523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 146542 + ... + 146608.

It is an arithmetic number, because the mean of its divisors is an integer number (309876).

Almost surely, 2^9820525 is an apocalyptic number.

It is an amenable number.

9820525 is a deficient number, since it is larger than the sum of its proper divisors (5053523).

9820525 is a wasteful number, since it uses less digits than its factorization.

9820525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 9820525 is about 3133.7716891950. The cubic root of 9820525 is about 214.1467898470.

The spelling of 9820525 in words is "nine million, eight hundred twenty thousand, five hundred twenty-five".