8625221 has 8 divisors (see below), whose sum is σ = 9904800. Its totient is φ = 7428240.

The previous prime is 8625203. The next prime is 8625229. The reversal of 8625221 is 1225268.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8625221 - 2¹⁴ = 8608837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8625229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20426 + ... + 20843.

It is an arithmetic number, because the mean of its divisors is an integer number (1238100).

Almost surely, 2^8625221 is an apocalyptic number.

It is an amenable number.

8625221 is a deficient number, since it is larger than the sum of its proper divisors (1279579).

8625221 is a wasteful number, since it uses less digits than its factorization.

8625221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41299.

The product of its digits is 1920, while the sum is 26.

The square root of 8625221 is about 2936.8726564153. The cubic root of 8625221 is about 205.0800480568.

The spelling of 8625221 in words is "eight million, six hundred twenty-five thousand, two hundred twenty-one".