8478725 has 12 divisors (see below), whose sum is σ = 10566660. Its totient is φ = 6748800.

The previous prime is 8478719. The next prime is 8478727. The reversal of 8478725 is 5278748.

It can be written as a sum of positive squares in 6 ways, for example, as 57121 + 8421604 = 239^2 + 2902^2 .

It is not a de Polignac number, because 8478725 - 2⁴ = 8478709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478727) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4985 + ... + 6465.

It is an arithmetic number, because the mean of its divisors is an integer number (880555).

Almost surely, 2^8478725 is an apocalyptic number.

It is an amenable number.

8478725 is a deficient number, since it is larger than the sum of its proper divisors (2087935).

8478725 is a wasteful number, since it uses less digits than its factorization.

8478725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1720 (or 1715 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 8478725 is about 2911.8250290840. The cubic root of 8478725 is about 203.9123437965.

The spelling of 8478725 in words is "eight million, four hundred seventy-eight thousand, seven hundred twenty-five".