8449425 has 54 divisors (see below), whose sum is σ = 16372278. Its totient is φ = 4151040.

The previous prime is 8449423. The next prime is 8449429. The reversal of 8449425 is 5249448.

It can be written as a sum of positive squares in 3 ways, for example, as 1272384 + 7177041 = 1128^2 + 2679^2 .

It is not a de Polignac number, because 8449425 - 2¹ = 8449423 is a prime.

Its product of digits (46080) is a multiple of the sum of its prime divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 8449425.

It is not an unprimeable number, because it can be changed into a prime (8449421) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 179752 + ... + 179798.

Almost surely, 2^8449425 is an apocalyptic number.

8449425 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

8449425 is a deficient number, since it is larger than the sum of its proper divisors (7922853).

8449425 is a wasteful number, since it uses less digits than its factorization.

8449425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 72 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 8449425 is about 2906.7894660605. The cubic root of 8449425 is about 203.6771855185.

The spelling of 8449425 in words is "eight million, four hundred forty-nine thousand, four hundred twenty-five".