1825225 has 6 divisors (see below), whose sum is σ = 2263310. Its totient is φ = 1460160.

The previous prime is 1825217. The next prime is 1825261. The reversal of 1825225 is 5225281.

It can be written as a sum of positive squares in 3 ways, for example, as 10816 + 1814409 = 104^2 + 1347^2 .

It is not a de Polignac number, because 1825225 - 2³ = 1825217 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: 73009 = 1825225 / (1 + 8 + 2 + 5 + 2 + 2 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1825225.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36480 + ... + 36529.

2^1825225 is an apocalyptic number.

It is an amenable number.

1825225 is a deficient number, since it is larger than the sum of its proper divisors (438085).

1825225 is an equidigital number, since it uses as much as digits as its factorization.

1825225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73019 (or 73014 counting only the distinct ones).

The product of its digits is 1600, while the sum is 25.

The square root of 1825225 is about 1351.0088822802. The cubic root of 1825225 is about 122.2096413435.

The spelling of 1825225 in words is "one million, eight hundred twenty-five thousand, two hundred twenty-five".