3639125 has 16 divisors (see below), whose sum is σ = 5191680. Its totient is φ = 2494800.

The previous prime is 3639109. The next prime is 3639143. The reversal of 3639125 is 5219363.

It is not a de Polignac number, because 3639125 - 2⁴ = 3639109 is a prime.

It is a super-4 number, since 4×3639125⁴ (a number of 27 digits) contains 4444 as substring.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 1205 + ... + 2954.

It is an arithmetic number, because the mean of its divisors is an integer number (324480).

Almost surely, 2^3639125 is an apocalyptic number.

3639125 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3639125 is a deficient number, since it is larger than the sum of its proper divisors (1552555).

3639125 is an equidigital number, since it uses as much as digits as its factorization.

3639125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4181 (or 4171 counting only the distinct ones).

The product of its digits is 4860, while the sum is 29.

The square root of 3639125 is about 1907.6490767434. The cubic root of 3639125 is about 153.8151067157.

The spelling of 3639125 in words is "three million, six hundred thirty-nine thousand, one hundred twenty-five".