844774225 has 9 divisors (see below), whose sum is σ = 1047700273. Its totient is φ = 675703120.

The previous prime is 844774171. The next prime is 844774237. The reversal of 844774225 is 522477448.

The square root of 844774225 is 29065.

It is a perfect power (a square), and thus also a powerful number.

844774225 is digitally balanced in base 2, 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 4 ways, for example, as 2845969 + 841928256 = 1687^2 + 29016^2 .

It is not a de Polignac number, because 844774225 - 2¹³ = 844766033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 142419 + ... + 148231.

Almost surely, 2^844774225 is an apocalyptic number.

844774225 is the 29065-th square number.

844774225 is the 14533-rd centered octagonal number.

It is an amenable number.

844774225 is a deficient number, since it is larger than the sum of its proper divisors (202926048).

844774225 is an frugal number, since it uses more digits than its factorization.

844774225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11636 (or 5818 counting only the distinct ones).

The product of its digits is 501760, while the sum is 43.

The cubic root of 844774225 is about 945.3229861870.

The spelling of 844774225 in words is "eight hundred forty-four million, seven hundred seventy-four thousand, two hundred twenty-five".