3613525 has 6 divisors (see below), whose sum is σ = 4480802. Its totient is φ = 2890800.

The previous prime is 3613523. The next prime is 3613543. The reversal of 3613525 is 5253163.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1034289 + 2579236 = 1017^2 + 1606^2 .

It is not a de Polignac number, because 3613525 - 2¹ = 3613523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 144541 = 3613525 / (3 + 6 + 1 + 3 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3613525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3613523) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72246 + ... + 72295.

Almost surely, 2^3613525 is an apocalyptic number.

It is an amenable number.

3613525 is a deficient number, since it is larger than the sum of its proper divisors (867277).

3613525 is a wasteful number, since it uses less digits than its factorization.

3613525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144551 (or 144546 counting only the distinct ones).

The product of its digits is 2700, while the sum is 25.

The square root of 3613525 is about 1900.9274052420. The cubic root of 3613525 is about 153.4535787507.

Adding to 3613525 its reverse (5253163), we get a palindrome (8866688).

The spelling of 3613525 in words is "three million, six hundred thirteen thousand, five hundred twenty-five".