1225424131 has 2 divisors, whose sum is σ = 1225424132. Its totient is φ = 1225424130.

The previous prime is 1225424129. The next prime is 1225424149. The reversal of 1225424131 is 1314245221.

It is a weak prime.

It is an emirp because it is prime and its reverse (1314245221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1225424131 - 2¹ = 1225424129 is a prime.

It is a super-2 number, since 2×1225424131² = 3003328601674210322, which contains 22 as substring.

Together with 1225424129, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1225424096 and 1225424105.

It is not a weakly prime, because it can be changed into another prime (1225424731) 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, 612712065 + 612712066.

It is an arithmetic number, because the mean of its divisors is an integer number (612712066).

Almost surely, 2^1225424131 is an apocalyptic number.

1225424131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225424131 is an equidigital number, since it uses as much as digits as its factorization.

1225424131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 1225424131 is about 35006.0584899243. The cubic root of 1225424131 is about 1070.1109533530.

Adding to 1225424131 its reverse (1314245221), we get a palindrome (2539669352).

The spelling of 1225424131 in words is "one billion, two hundred twenty-five million, four hundred twenty-four thousand, one hundred thirty-one".