13530525 has 24 divisors (see below), whose sum is σ = 22498560. Its totient is φ = 7175040.

The previous prime is 13530523. The next prime is 13530557. The reversal of 13530525 is 52503531.

It is not a de Polignac number, because 13530525 - 2¹ = 13530523 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13530495 and 13530504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16321 + ... + 17129.

It is an arithmetic number, because the mean of its divisors is an integer number (937440).

Almost surely, 2^13530525 is an apocalyptic number.

13530525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13530525 is a deficient number, since it is larger than the sum of its proper divisors (8968035).

13530525 is a wasteful number, since it uses less digits than its factorization.

13530525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1040 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 24.

The square root of 13530525 is about 3678.3861950589. The cubic root of 13530525 is about 238.2894872096.

The spelling of 13530525 in words is "thirteen million, five hundred thirty thousand, five hundred twenty-five".