8724225 has 24 divisors (see below), whose sum is σ = 14597280. Its totient is φ = 4597120.

The previous prime is 8724223. The next prime is 8724241. The reversal of 8724225 is 5224278.

It is not a de Polignac number, because 8724225 - 2¹ = 8724223 is a prime.

It is a super-2 number, since 2×8724225² = 152224203701250, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 8724192 and 8724201.

It is not an unprimeable number, because it can be changed into a prime (8724223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6022 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (608220).

Almost surely, 2^8724225 is an apocalyptic number.

It is an amenable number.

8724225 is a deficient number, since it is larger than the sum of its proper divisors (5873055).

8724225 is a wasteful number, since it uses less digits than its factorization.

8724225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1404 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 8724225 is about 2953.6799081823. The cubic root of 8724225 is about 205.8617305074.

The spelling of 8724225 in words is "eight million, seven hundred twenty-four thousand, two hundred twenty-five".