3655725 has 24 divisors (see below), whose sum is σ = 6130560. Its totient is φ = 1921920.

The previous prime is 3655723. The next prime is 3655727. The reversal of 3655725 is 5275563.

It is an interprime number because it is at equal distance from previous prime (3655723) and next prime (3655727).

It is not a de Polignac number, because 3655725 - 2¹ = 3655723 is a prime.

It is a d-powerful number, because it can be written as 3⁹ + 6⁸ + 5³ + 5⁵ + 7² + 2 + 5⁹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3655723) 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, 5617 + ... + 6233.

It is an arithmetic number, because the mean of its divisors is an integer number (255440).

Almost surely, 2^3655725 is an apocalyptic number.

It is an amenable number.

3655725 is a deficient number, since it is larger than the sum of its proper divisors (2474835).

3655725 is a wasteful number, since it uses less digits than its factorization.

3655725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709 (or 704 counting only the distinct ones).

The product of its digits is 31500, while the sum is 33.

The square root of 3655725 is about 1911.9950313743. The cubic root of 3655725 is about 154.0486297201.

The spelling of 3655725 in words is "three million, six hundred fifty-five thousand, seven hundred twenty-five".