8621425 has 6 divisors (see below), whose sum is σ = 10690598. Its totient is φ = 6897120.

The previous prime is 8621413. The next prime is 8621429. The reversal of 8621425 is 5241268.

It can be written as a sum of positive squares in 3 ways, for example, as 831744 + 7789681 = 912^2 + 2791^2 .

It is not a de Polignac number, because 8621425 - 2¹⁹ = 8097137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8621393 and 8621402.

It is not an unprimeable number, because it can be changed into a prime (8621429) 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 5 ways as a sum of consecutive naturals, for example, 172404 + ... + 172453.

Almost surely, 2^8621425 is an apocalyptic number.

It is an amenable number.

8621425 is a deficient number, since it is larger than the sum of its proper divisors (2069173).

8621425 is a wasteful number, since it uses less digits than its factorization.

8621425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344867 (or 344862 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 8621425 is about 2936.2263196150. The cubic root of 8621425 is about 205.0499580801.

The spelling of 8621425 in words is "eight million, six hundred twenty-one thousand, four hundred twenty-five".