1225441523 has 2 divisors, whose sum is σ = 1225441524. Its totient is φ = 1225441522.

The previous prime is 1225441513. The next prime is 1225441543. The reversal of 1225441523 is 3251445221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1225441523 - 2¹⁰ = 1225440499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225441513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612720761 + 612720762.

It is an arithmetic number, because the mean of its divisors is an integer number (612720762).

Almost surely, 2^1225441523 is an apocalyptic number.

1225441523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225441523 is an equidigital number, since it uses as much as digits as its factorization.

1225441523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 1225441523 is about 35006.3069031853. The cubic root of 1225441523 is about 1070.1160158945.

Adding to 1225441523 its reverse (3251445221), we get a palindrome (4476886744).

The spelling of 1225441523 in words is "one billion, two hundred twenty-five million, four hundred forty-one thousand, five hundred twenty-three".