3765625 has 14 divisors (see below), whose sum is σ = 4726502. Its totient is φ = 3000000.

The previous prime is 3765613. The next prime is 3765631. The reversal of 3765625 is 5265673.

It can be written as a sum of positive squares in 7 ways, for example, as 3728761 + 36864 = 1931^2 + 192^2 .

It is not a de Polignac number, because 3765625 - 2⁷ = 3765497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 15505 + ... + 15745.

Almost surely, 2^3765625 is an apocalyptic number.

It is an amenable number.

3765625 is a deficient number, since it is larger than the sum of its proper divisors (960877).

3765625 is an frugal number, since it uses more digits than its factorization.

3765625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271 (or 246 counting only the distinct ones).

The product of its digits is 37800, while the sum is 34.

The square root of 3765625 is about 1940.5218370325. The cubic root of 3765625 is about 155.5771063302.

The spelling of 3765625 in words is "three million, seven hundred sixty-five thousand, six hundred twenty-five".