3639525 has 12 divisors (see below), whose sum is σ = 6017472. Its totient is φ = 1941040.

The previous prime is 3639523. The next prime is 3639527. The reversal of 3639525 is 5259363.

It is an interprime number because it is at equal distance from previous prime (3639523) and next prime (3639527).

It is not a de Polignac number, because 3639525 - 2¹ = 3639523 is a prime.

It is a super-2 number, since 2×3639525² = 26492284451250, which contains 22 as substring.

It is a d-powerful number, because it can be written as 3⁴ + 6⁸ + 3⁸ + 9 + 5 + 2⁷ + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3639521) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24189 + ... + 24338.

It is an arithmetic number, because the mean of its divisors is an integer number (501456).

Almost surely, 2^3639525 is an apocalyptic number.

It is an amenable number.

3639525 is a deficient number, since it is larger than the sum of its proper divisors (2377947).

3639525 is a wasteful number, since it uses less digits than its factorization.

3639525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48540 (or 48535 counting only the distinct ones).

The product of its digits is 24300, while the sum is 33.

The square root of 3639525 is about 1907.7539149482. The cubic root of 3639525 is about 153.8207421169.

The spelling of 3639525 in words is "three million, six hundred thirty-nine thousand, five hundred twenty-five".