1225559 has 2 divisors, whose sum is σ = 1225560. Its totient is φ = 1225558.

The previous prime is 1225541. The next prime is 1225571. The reversal of 1225559 is 9555221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225559 - 2⁸ = 1225303 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612779 + 612780.

It is an arithmetic number, because the mean of its divisors is an integer number (612780).

2^1225559 is an apocalyptic number.

1225559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225559 is an equidigital number, since it uses as much as digits as its factorization.

1225559 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4500, while the sum is 29.

The square root of 1225559 is about 1107.0496827153. The cubic root of 1225559 is about 107.0150210373.

The spelling of 1225559 in words is "one million, two hundred twenty-five thousand, five hundred fifty-nine".