3645425 has 24 divisors (see below), whose sum is σ = 5315136. Its totient is φ = 2427840.

The previous prime is 3645419. The next prime is 3645449. The reversal of 3645425 is 5245463.

It is not a de Polignac number, because 3645425 - 2⁴ = 3645409 is a prime.

It is a super-3 number, since 3×3645425³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6194 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (221464).

Almost surely, 2^3645425 is an apocalyptic number.

3645425 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3645425 is a deficient number, since it is larger than the sum of its proper divisors (1669711).

3645425 is a wasteful number, since it uses less digits than its factorization.

3645425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 612 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 3645425 is about 1909.2996098046. The cubic root of 3645425 is about 153.9038163658.

The spelling of 3645425 in words is "three million, six hundred forty-five thousand, four hundred twenty-five".