8225425 has 12 divisors (see below), whose sum is σ = 10984540. Its totient is φ = 6073920.

The previous prime is 8225407. The next prime is 8225429. The reversal of 8225425 is 5245228.

It is a Cunningham number, because it is equal to 2868²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 646416 + 7579009 = 804^2 + 2753^2 .

It is not a de Polignac number, because 8225425 - 2⁹ = 8224913 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8225393 and 8225402.

It is not an unprimeable number, because it can be changed into a prime (8225429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12330 + ... + 12979.

Almost surely, 2^8225425 is an apocalyptic number.

It is an amenable number.

8225425 is a deficient number, since it is larger than the sum of its proper divisors (2759115).

8225425 is a wasteful number, since it uses less digits than its factorization.

8225425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25332 (or 25327 counting only the distinct ones).

The product of its digits is 6400, while the sum is 28.

The square root of 8225425 is about 2868.0001743375. Note that the first 3 decimals coincide. The cubic root of 8225425 is about 201.8611682063.

The spelling of 8225425 in words is "eight million, two hundred twenty-five thousand, four hundred twenty-five".