9001525 has 12 divisors (see below), whose sum is σ = 12020932. Its totient is φ = 6647040.

The previous prime is 9001523. The next prime is 9001561. The reversal of 9001525 is 5251009.

9001525 = 2121² + 2122².

It can be written as a sum of positive squares in 6 ways, for example, as 3511876 + 5489649 = 1874^2 + 2343^2 .

It is not a de Polignac number, because 9001525 - 2¹ = 9001523 is a prime.

It is a Duffinian number.

9001525 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9001496 and 9001505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9001523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13524 + ... + 14173.

Almost surely, 2^9001525 is an apocalyptic number.

9001525 is the 2122-nd centered square number.

It is an amenable number.

9001525 is a deficient number, since it is larger than the sum of its proper divisors (3019407).

9001525 is a wasteful number, since it uses less digits than its factorization.

9001525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27720 (or 27715 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 9001525 is about 3000.2541559008. The cubic root of 9001525 is about 208.0201302633.

The spelling of 9001525 in words is "nine million, one thousand, five hundred twenty-five".