8515625 has 16 divisors (see below), whose sum is σ = 10742160. Its totient is φ = 6750000.

The previous prime is 8515621. The next prime is 8515627. The reversal of 8515625 is 5265158.

8515625 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7252249 + 1263376 = 2693^2 + 1124^2 .

It is not a de Polignac number, because 8515625 - 2² = 8515621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8515591 and 8515600.

It is not an unprimeable number, because it can be changed into a prime (8515621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78071 + ... + 78179.

It is an arithmetic number, because the mean of its divisors is an integer number (671385).

Almost surely, 2^8515625 is an apocalyptic number.

It is an amenable number.

8515625 is a deficient number, since it is larger than the sum of its proper divisors (2226535).

8515625 is an frugal number, since it uses more digits than its factorization.

8515625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 114 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The square root of 8515625 is about 2918.1543824822. The cubic root of 8515625 is about 204.2077292576.

The spelling of 8515625 in words is "eight million, five hundred fifteen thousand, six hundred twenty-five".