1225243234651 has 2 divisors, whose sum is σ = 1225243234652. Its totient is φ = 1225243234650.

The previous prime is 1225243234591. The next prime is 1225243234669. The reversal of 1225243234651 is 1564323425221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225243234651 - 2²⁹ = 1224706363739 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225243204651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612621617325 + 612621617326.

It is an arithmetic number, because the mean of its divisors is an integer number (612621617326).

Almost surely, 2^{1225243234651} is an apocalyptic number.

1225243234651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225243234651 is an equidigital number, since it uses as much as digits as its factorization.

1225243234651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345600, while the sum is 40.

Adding to 1225243234651 its reverse (1564323425221), we get a palindrome (2789566659872).

The spelling of 1225243234651 in words is "one trillion, two hundred twenty-five billion, two hundred forty-three million, two hundred thirty-four thousand, six hundred fifty-one".