9780525 has 36 divisors (see below), whose sum is σ = 18555732. Its totient is φ = 4907520.

The previous prime is 9780523. The next prime is 9780539. The reversal of 9780525 is 5250879.

It can be written as a sum of positive squares in 6 ways, for example, as 8649 + 9771876 = 93^2 + 3126^2 .

It is not a de Polignac number, because 9780525 - 2¹ = 9780523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9780525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9780521) 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 35 ways as a sum of consecutive naturals, for example, 2547 + ... + 5103.

It is an arithmetic number, because the mean of its divisors is an integer number (515437).

Almost surely, 2^9780525 is an apocalyptic number.

It is an amenable number.

9780525 is a deficient number, since it is larger than the sum of its proper divisors (8775207).

9780525 is a wasteful number, since it uses less digits than its factorization.

9780525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590 (or 2582 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The square root of 9780525 is about 3127.3830913401. The cubic root of 9780525 is about 213.8556469644.

The spelling of 9780525 in words is "nine million, seven hundred eighty thousand, five hundred twenty-five".