2521525 has 18 divisors (see below), whose sum is σ = 3330950. Its totient is φ = 1893120.

The previous prime is 2521517. The next prime is 2521537. The reversal of 2521525 is 5251252.

It can be written as a sum of positive squares in 9 ways, for example, as 34596 + 2486929 = 186^2 + 1577^2 .

It is not a de Polignac number, because 2521525 - 2³ = 2521517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2521496 and 2521505.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 7051 + ... + 7399.

2^2521525 is an apocalyptic number.

2521525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2521525 is a deficient number, since it is larger than the sum of its proper divisors (809425).

2521525 is a wasteful number, since it uses less digits than its factorization.

2521525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 371 counting only the distinct ones).

The product of its digits is 1000, while the sum is 22.

The square root of 2521525 is about 1587.9310438429. The cubic root of 2521525 is about 136.1092871553.

Adding to 2521525 its reverse (5251252), we get a palindrome (7772777).

The spelling of 2521525 in words is "two million, five hundred twenty-one thousand, five hundred twenty-five".