1225019 has 2 divisors, whose sum is σ = 1225020. Its totient is φ = 1225018.

The previous prime is 1225009. The next prime is 1225061. The reversal of 1225019 is 9105221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225019 - 2⁸ = 1224763 is a prime.

It is a super-2 number, since 2×1225019² = 3001343100722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1225009) 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, 612509 + 612510.

It is an arithmetic number, because the mean of its divisors is an integer number (612510).

2^1225019 is an apocalyptic number.

1225019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225019 is an equidigital number, since it uses as much as digits as its factorization.

1225019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1225019 is about 1106.8057643507. The cubic root of 1225019 is about 106.9993012445. Note that the first 3 decimals are identical.

The spelling of 1225019 in words is "one million, two hundred twenty-five thousand, nineteen".