1225219 has 2 divisors, whose sum is σ = 1225220. Its totient is φ = 1225218.

The previous prime is 1225183. The next prime is 1225223. The reversal of 1225219 is 9125221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225219 - 2¹⁷ = 1094147 is a prime.

It is a super-2 number, since 2×1225219² = 3002323195922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1225219.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612609 + 612610.

It is an arithmetic number, because the mean of its divisors is an integer number (612610).

2^1225219 is an apocalyptic number.

1225219 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225219 is an equidigital number, since it uses as much as digits as its factorization.

1225219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 22.

The square root of 1225219 is about 1106.8961107529. The cubic root of 1225219 is about 107.0051239285.

It can be divided in two parts, 1225 and 219, that added together give a square (1444 = 38²).

The spelling of 1225219 in words is "one million, two hundred twenty-five thousand, two hundred nineteen".