1225241 has 4 divisors (see below), whose sum is σ = 1297332. Its totient is φ = 1153152.

The previous prime is 1225223. The next prime is 1225261. The reversal of 1225241 is 1425221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1081600 + 143641 = 1040^2 + 379^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225241 - 2¹⁰ = 1224217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 72073 = 1225241 / (1 + 2 + 2 + 5 + 2 + 4 + 1).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36020 + ... + 36053.

It is an arithmetic number, because the mean of its divisors is an integer number (324333).

2^1225241 is an apocalyptic number.

It is an amenable number.

1225241 is a deficient number, since it is larger than the sum of its proper divisors (72091).

1225241 is an equidigital number, since it uses as much as digits as its factorization.

1225241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72090.

The product of its digits is 160, while the sum is 17.

The square root of 1225241 is about 1106.9060484070. The cubic root of 1225241 is about 107.0057643851.

The spelling of 1225241 in words is "one million, two hundred twenty-five thousand, two hundred forty-one".