3663425 has 24 divisors (see below), whose sum is σ = 4880640. Its totient is φ = 2721600.

The previous prime is 3663421. The next prime is 3663427. The reversal of 3663425 is 5243663.

It is not a de Polignac number, because 3663425 - 2² = 3663421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a d-powerful number, because it can be written as 3⁸ + 6³ + 6⁸ + 3⁹ + 4⁶ + 2⁷ + 5⁹ .

It is not an unprimeable number, because it can be changed into a prime (3663421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22394 + ... + 22556.

It is an arithmetic number, because the mean of its divisors is an integer number (203360).

Almost surely, 2^3663425 is an apocalyptic number.

It is an amenable number.

3663425 is a deficient number, since it is larger than the sum of its proper divisors (1217215).

3663425 is a wasteful number, since it uses less digits than its factorization.

3663425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 228 counting only the distinct ones).

The product of its digits is 12960, while the sum is 29.

The square root of 3663425 is about 1914.0075757426. The cubic root of 3663425 is about 154.1567106630.

Subtracting from 3663425 its sum of digits (29), we obtain a square (3663396 = 1914²).

The spelling of 3663425 in words is "three million, six hundred sixty-three thousand, four hundred twenty-five".