1225619850643 has 2 divisors, whose sum is σ = 1225619850644. Its totient is φ = 1225619850642.

The previous prime is 1225619850529. The next prime is 1225619850667. The reversal of 1225619850643 is 3460589165221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225619850643 - 2⁹ = 1225619850131 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225619890643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612809925321 + 612809925322.

It is an arithmetic number, because the mean of its divisors is an integer number (612809925322).

Almost surely, 2^{1225619850643} is an apocalyptic number.

1225619850643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225619850643 is an equidigital number, since it uses as much as digits as its factorization.

1225619850643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 52.

The spelling of 1225619850643 in words is "one trillion, two hundred twenty-five billion, six hundred nineteen million, eight hundred fifty thousand, six hundred forty-three".