1438225 has 6 divisors (see below), whose sum is σ = 1783430. Its totient is φ = 1150560.

The previous prime is 1438223. The next prime is 1438231. The reversal of 1438225 is 5228341.

It can be written as a sum of positive squares in 3 ways, for example, as 263169 + 1175056 = 513^2 + 1084^2 .

It is not a de Polignac number, because 1438225 - 2¹ = 1438223 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 57529 = 1438225 / (1 + 4 + 3 + 8 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1438225.

It is not an unprimeable number, because it can be changed into a prime (1438223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28740 + ... + 28789.

2^1438225 is an apocalyptic number.

It is an amenable number.

1438225 is a deficient number, since it is larger than the sum of its proper divisors (345205).

1438225 is an equidigital number, since it uses as much as digits as its factorization.

1438225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57539 (or 57534 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 1438225 is about 1199.2601886163. The cubic root of 1438225 is about 112.8779060843.

The spelling of 1438225 in words is "one million, four hundred thirty-eight thousand, two hundred twenty-five".