8405625 has 20 divisors (see below), whose sum is σ = 14008016. Its totient is φ = 4482000.

The previous prime is 8405609. The next prime is 8405627. The reversal of 8405625 is 5265048.

It is not a de Polignac number, because 8405625 - 2⁴ = 8405609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8405592 and 8405601.

It is not an unprimeable number, because it can be changed into a prime (8405627) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 367 + ... + 4116.

Almost surely, 2^8405625 is an apocalyptic number.

It is an amenable number.

8405625 is a deficient number, since it is larger than the sum of its proper divisors (5602391).

8405625 is an equidigital number, since it uses as much as digits as its factorization.

8405625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4491 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 8405625 is about 2899.2455915289. The cubic root of 8405625 is about 203.3246360758.

The spelling of 8405625 in words is "eight million, four hundred five thousand, six hundred twenty-five".