1225610555233 has 2 divisors, whose sum is σ = 1225610555234. Its totient is φ = 1225610555232.

The previous prime is 1225610555203. The next prime is 1225610555261. The reversal of 1225610555233 is 3325550165221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 750955696929 + 474654858304 = 866577^2 + 688952^2 .

It is an emirp because it is prime and its reverse (3325550165221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1225610555233 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225610555203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612805277616 + 612805277617.

It is an arithmetic number, because the mean of its divisors is an integer number (612805277617).

Almost surely, 2^{1225610555233} is an apocalyptic number.

It is an amenable number.

1225610555233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225610555233 is an equidigital number, since it uses as much as digits as its factorization.

1225610555233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 1225610555233 in words is "one trillion, two hundred twenty-five billion, six hundred ten million, five hundred fifty-five thousand, two hundred thirty-three".