3643025 has 6 divisors (see below), whose sum is σ = 4517382. Its totient is φ = 2914400.

The previous prime is 3643001. The next prime is 3643033. The reversal of 3643025 is 5203463.

It can be written as a sum of positive squares in 3 ways, for example, as 399424 + 3243601 = 632^2 + 1801^2 .

It is not a de Polignac number, because 3643025 - 2¹⁴ = 3626641 is a prime.

It is a d-powerful number, because it can be written as 3⁷ + 6⁸ + 4⁵ + 3⁸ + 0 + 2⁹ + 5⁹ .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 72836 + ... + 72885.

It is an arithmetic number, because the mean of its divisors is an integer number (752897).

Almost surely, 2^3643025 is an apocalyptic number.

It is an amenable number.

3643025 is a deficient number, since it is larger than the sum of its proper divisors (874357).

3643025 is a wasteful number, since it uses less digits than its factorization.

3643025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145731 (or 145726 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 3643025 is about 1908.6710036043. The cubic root of 3643025 is about 153.8700342738.

Adding to 3643025 its reverse (5203463), we get a palindrome (8846488).

The spelling of 3643025 in words is "three million, six hundred forty-three thousand, twenty-five".