8815825 has 6 divisors (see below), whose sum is σ = 10931654. Its totient is φ = 7052640.

The previous prime is 8815823. The next prime is 8815853. The reversal of 8815825 is 5285188.

It can be written as a sum of positive squares in 3 ways, for example, as 2050624 + 6765201 = 1432^2 + 2601^2 .

It is not a de Polignac number, because 8815825 - 2¹ = 8815823 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8815823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176292 + ... + 176341.

Almost surely, 2^8815825 is an apocalyptic number.

It is an amenable number.

8815825 is a deficient number, since it is larger than the sum of its proper divisors (2115829).

8815825 is a wasteful number, since it uses less digits than its factorization.

8815825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352643 (or 352638 counting only the distinct ones).

The product of its digits is 25600, while the sum is 37.

The square root of 8815825 is about 2969.1454999713. The cubic root of 8815825 is about 206.5797052911.

It can be divided in two parts, 88158 and 25, that multiplied together give a triangular number (2203950 = T₂₀₉₉).

The spelling of 8815825 in words is "eight million, eight hundred fifteen thousand, eight hundred twenty-five".