3657425 has 6 divisors (see below), whose sum is σ = 4535238. Its totient is φ = 2925920.

The previous prime is 3657419. The next prime is 3657439. The reversal of 3657425 is 5247563.

It can be written as a sum of positive squares in 3 ways, for example, as 1681 + 3655744 = 41^2 + 1912^2 .

It is not a de Polignac number, because 3657425 - 2⁶ = 3657361 is a prime.

It is a super-3 number, since 3×3657425³ (a number of 21 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3657391 and 3657400.

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, 73124 + ... + 73173.

It is an arithmetic number, because the mean of its divisors is an integer number (755873).

Almost surely, 2^3657425 is an apocalyptic number.

It is an amenable number.

3657425 is a deficient number, since it is larger than the sum of its proper divisors (877813).

3657425 is a wasteful number, since it uses less digits than its factorization.

3657425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146307 (or 146302 counting only the distinct ones).

The product of its digits is 25200, while the sum is 32.

The square root of 3657425 is about 1912.4395415280. The cubic root of 3657425 is about 154.0725047916.

The spelling of 3657425 in words is "three million, six hundred fifty-seven thousand, four hundred twenty-five".