1225225 has 6 divisors (see below), whose sum is σ = 1519310. Its totient is φ = 980160.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225225 is 5225221.

It can be written as a sum of positive squares in 3 ways, for example, as 17424 + 1207801 = 132^2 + 1099^2 .

It is not a de Polignac number, because 1225225 - 2¹ = 1225223 is a prime.

1225225 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1225223) 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, 24480 + ... + 24529.

2^1225225 is an apocalyptic number.

It is an amenable number.

1225225 is a deficient number, since it is larger than the sum of its proper divisors (294085).

1225225 is an equidigital number, since it uses as much as digits as its factorization.

1225225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49019 (or 49014 counting only the distinct ones).

The product of its digits is 400, while the sum is 19.

The square root of 1225225 is about 1106.8988210311. The cubic root of 1225225 is about 107.0052985992.

It can be divided in two parts, 1225 and 225, that multiplied together give a square (275625 = 525²).

The spelling of 1225225 in words is "one million, two hundred twenty-five thousand, two hundred twenty-five".