1225550354243 has 2 divisors, whose sum is σ = 1225550354244. Its totient is φ = 1225550354242.

The previous prime is 1225550354213. The next prime is 1225550354261. The reversal of 1225550354243 is 3424530555221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225550354243 - 2²² = 1225546159939 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1225550354243.

It is not a weakly prime, because it can be changed into another prime (1225550354213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612775177121 + 612775177122.

It is an arithmetic number, because the mean of its divisors is an integer number (612775177122).

Almost surely, 2^{1225550354243} is an apocalyptic number.

1225550354243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225550354243 is an equidigital number, since it uses as much as digits as its factorization.

1225550354243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720000, while the sum is 41.

The spelling of 1225550354243 in words is "one trillion, two hundred twenty-five billion, five hundred fifty million, three hundred fifty-four thousand, two hundred forty-three".