1789225 has 6 divisors (see below), whose sum is σ = 2218670. Its totient is φ = 1431360.

The previous prime is 1789223. The next prime is 1789247. The reversal of 1789225 is 5229871.

It can be written as a sum of positive squares in 3 ways, for example, as 278784 + 1510441 = 528^2 + 1229^2 .

It is not a de Polignac number, because 1789225 - 2¹ = 1789223 is a prime.

It is a super-2 number, since 2×1789225² = 6402652201250, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1789223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35760 + ... + 35809.

2^1789225 is an apocalyptic number.

It is an amenable number.

1789225 is a deficient number, since it is larger than the sum of its proper divisors (429445).

1789225 is an equidigital number, since it uses as much as digits as its factorization.

1789225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71579 (or 71574 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 1789225 is about 1337.6191535710. The cubic root of 1789225 is about 121.4008290553.

The spelling of 1789225 in words is "one million, seven hundred eighty-nine thousand, two hundred twenty-five".