8417725 has 12 divisors (see below), whose sum is σ = 10636596. Its totient is φ = 6606080.

The previous prime is 8417719. The next prime is 8417729. The reversal of 8417725 is 5277148.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 19321 + 8398404 = 139^2 + 2898^2 .

It is not a de Polignac number, because 8417725 - 2⁵ = 8417693 is a prime.

It is a Duffinian number.

8417725 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8417729) 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, 1852 + ... + 4501.

It is an arithmetic number, because the mean of its divisors is an integer number (886383).

Almost surely, 2^8417725 is an apocalyptic number.

It is an amenable number.

8417725 is a deficient number, since it is larger than the sum of its proper divisors (2218871).

8417725 is a wasteful number, since it uses less digits than its factorization.

8417725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6416 (or 6411 counting only the distinct ones).

The product of its digits is 15680, while the sum is 34.

The square root of 8417725 is about 2901.3315908389. The cubic root of 8417725 is about 203.4221520658.

The spelling of 8417725 in words is "eight million, four hundred seventeen thousand, seven hundred twenty-five".