8819725 has 12 divisors (see below), whose sum is σ = 11052244. Its totient is φ = 6981120.

The previous prime is 8819659. The next prime is 8819729. The reversal of 8819725 is 5279188.

It can be written as a sum of positive squares in 6 ways, for example, as 1865956 + 6953769 = 1366^2 + 2637^2 .

It is not a de Polignac number, because 8819725 - 2¹⁵ = 8786957 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8819729) 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, 607 + ... + 4243.

Almost surely, 2^8819725 is an apocalyptic number.

8819725 is the 2425-th pentagonal number.

It is an amenable number.

8819725 is a deficient number, since it is larger than the sum of its proper divisors (2232519).

8819725 is a wasteful number, since it uses less digits than its factorization.

8819725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3744 (or 3739 counting only the distinct ones).

The product of its digits is 40320, while the sum is 40.

The square root of 8819725 is about 2969.8021819643. The cubic root of 8819725 is about 206.6101634757.

The spelling of 8819725 in words is "eight million, eight hundred nineteen thousand, seven hundred twenty-five".