8919225 has 54 divisors (see below), whose sum is σ = 18606510. Its totient is φ = 4072320.

The previous prime is 8919223. The next prime is 8919259. The reversal of 8919225 is 5229198.

8919225 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1806336 + 7112889 = 1344^2 + 2667^2 .

It is not a de Polignac number, because 8919225 - 2¹ = 8919223 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8919225.

It is not an unprimeable number, because it can be changed into a prime (8919223) 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, 10621 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (344565).

Almost surely, 2^8919225 is an apocalyptic number.

It is an amenable number.

8919225 is an abundant number, since it is smaller than the sum of its proper divisors (9687285).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8919225 is a wasteful number, since it uses less digits than its factorization.

8919225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 824 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 8919225 is about 2986.5071571989. The cubic root of 8919225 is about 207.3842195335.

The spelling of 8919225 in words is "eight million, nine hundred nineteen thousand, two hundred twenty-five".