3015625 has 14 divisors (see below), whose sum is σ = 3789014. Its totient is φ = 2400000.

The previous prime is 3015619. The next prime is 3015637. The reversal of 3015625 is 5265103.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 2930944 + 84681 = 1712^2 + 291^2 .

It is not a de Polignac number, because 3015625 - 2⁷ = 3015497 is a prime.

It is an Ulam number.

It is a Duffinian number.

3015625 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3015596 and 3015605.

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, 15529 + ... + 15721.

Almost surely, 2^3015625 is an apocalyptic number.

It is an amenable number.

3015625 is a deficient number, since it is larger than the sum of its proper divisors (773389).

3015625 is an frugal number, since it uses more digits than its factorization.

3015625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 3015625 is about 1736.5554986812. Note that the first 3 decimals coincide. The cubic root of 3015625 is about 144.4749141288.

The spelling of 3015625 in words is "three million, fifteen thousand, six hundred twenty-five".