3644025 has 48 divisors (see below), whose sum is σ = 7523328. Its totient is φ = 1512000.

The previous prime is 3644023. The next prime is 3644057. The reversal of 3644025 is 5204463.

It is not a de Polignac number, because 3644025 - 2¹ = 3644023 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3643986 and 3644004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5460 + ... + 6090.

It is an arithmetic number, because the mean of its divisors is an integer number (156736).

Almost surely, 2^3644025 is an apocalyptic number.

3644025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3644025 is an abundant number, since it is smaller than the sum of its proper divisors (3879303).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644025 is a wasteful number, since it uses less digits than its factorization.

3644025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 657 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 3644025 is about 1908.9329480105. The cubic root of 3644025 is about 153.8841119480.

Adding to 3644025 its reverse (5204463), we get a palindrome (8848488).

The spelling of 3644025 in words is "three million, six hundred forty-four thousand, twenty-five".