1225319 has 2 divisors, whose sum is σ = 1225320. Its totient is φ = 1225318.

The previous prime is 1225303. The next prime is 1225327. The reversal of 1225319 is 9135221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225319 - 2⁴ = 1225303 is a prime.

It is a super-2 number, since 2×1225319² = 3002813303522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1225294 and 1225303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612659 + 612660.

It is an arithmetic number, because the mean of its divisors is an integer number (612660).

2^1225319 is an apocalyptic number.

1225319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225319 is an equidigital number, since it uses as much as digits as its factorization.

1225319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 23.

The square root of 1225319 is about 1106.9412811888. The cubic root of 1225319 is about 107.0080350329.

The spelling of 1225319 in words is "one million, two hundred twenty-five thousand, three hundred nineteen".