844790225 has 12 divisors (see below), whose sum is σ = 1059312780. Its totient is φ = 668236800.

The previous prime is 844790209. The next prime is 844790227. The reversal of 844790225 is 522097448.

It can be written as a sum of positive squares in 6 ways, for example, as 3094081 + 841696144 = 1759^2 + 29012^2 .

It is not a de Polignac number, because 844790225 - 2⁴ = 844790209 is a prime.

It is a super-4 number, since 4×844790225⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (844790227) 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, 187616 + ... + 192065.

It is an arithmetic number, because the mean of its divisors is an integer number (88276065).

Almost surely, 2^844790225 is an apocalyptic number.

It is an amenable number.

844790225 is a deficient number, since it is larger than the sum of its proper divisors (214522555).

844790225 is a wasteful number, since it uses less digits than its factorization.

844790225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379780 (or 379775 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 844790225 is about 29065.2752438369. The cubic root of 844790225 is about 945.3289542795.

The spelling of 844790225 in words is "eight hundred forty-four million, seven hundred ninety thousand, two hundred twenty-five".