1225554433 has 2 divisors, whose sum is σ = 1225554434. Its totient is φ = 1225554432.

The previous prime is 1225554409. The next prime is 1225554443. The reversal of 1225554433 is 3344555221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142980864 + 82573569 = 33808^2 + 9087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225554433 - 2⁹ = 1225553921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225554443) 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, 612777216 + 612777217.

It is an arithmetic number, because the mean of its divisors is an integer number (612777217).

Almost surely, 2^1225554433 is an apocalyptic number.

It is an amenable number.

1225554433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225554433 is an equidigital number, since it uses as much as digits as its factorization.

1225554433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72000, while the sum is 34.

The square root of 1225554433 is about 35007.9195754332. The cubic root of 1225554433 is about 1070.1488810799.

It can be divided in two parts, 122 and 5554433, that added together give a palindrome (5554555).

The spelling of 1225554433 in words is "one billion, two hundred twenty-five million, five hundred fifty-four thousand, four hundred thirty-three".