1825217 has 2 divisors, whose sum is σ = 1825218. Its totient is φ = 1825216.

The previous prime is 1825207. The next prime is 1825261. The reversal of 1825217 is 7125281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1825201 + 16 = 1351^2 + 4^2 .

It is an emirp because it is prime and its reverse (7125281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1825217 - 2¹² = 1821121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1825207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912608 + 912609.

It is an arithmetic number, because the mean of its divisors is an integer number (912609).

2^1825217 is an apocalyptic number.

It is an amenable number.

1825217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825217 is an equidigital number, since it uses as much as digits as its factorization.

1825217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 26.

The square root of 1825217 is about 1351.0059215266. The cubic root of 1825217 is about 122.2094627941.

The spelling of 1825217 in words is "one million, eight hundred twenty-five thousand, two hundred seventeen".