3645825 has 12 divisors (see below), whose sum is σ = 6027888. Its totient is φ = 1944400.

The previous prime is 3645823. The next prime is 3645877. The reversal of 3645825 is 5285463.

It is not a de Polignac number, because 3645825 - 2¹ = 3645823 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a d-powerful number, because it can be written as 3¹³ + 6² + 4⁸ + 5 + 8⁵ + 2⁵ + 5⁹ .

3645825 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3645823) 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, 24231 + ... + 24380.

It is an arithmetic number, because the mean of its divisors is an integer number (502324).

Almost surely, 2^3645825 is an apocalyptic number.

It is an amenable number.

3645825 is a deficient number, since it is larger than the sum of its proper divisors (2382063).

3645825 is a wasteful number, since it uses less digits than its factorization.

3645825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48624 (or 48619 counting only the distinct ones).

The product of its digits is 28800, while the sum is 33.

The square root of 3645825 is about 1909.4043573848. The cubic root of 3645825 is about 153.9094452728.

The spelling of 3645825 in words is "three million, six hundred forty-five thousand, eight hundred twenty-five".