1225501200571 has 2 divisors, whose sum is σ = 1225501200572. Its totient is φ = 1225501200570.

The previous prime is 1225501200467. The next prime is 1225501200577. The reversal of 1225501200571 is 1750021055221.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1225501200571 - 2³³ = 1216911265979 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225501200577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612750600285 + 612750600286.

It is an arithmetic number, because the mean of its divisors is an integer number (612750600286).

Almost surely, 2^{1225501200571} is an apocalyptic number.

1225501200571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225501200571 is an equidigital number, since it uses as much as digits as its factorization.

1225501200571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7000, while the sum is 31.

Adding to 1225501200571 its reverse (1750021055221), we get a palindrome (2975522255792).

The spelling of 1225501200571 in words is "one trillion, two hundred twenty-five billion, five hundred one million, two hundred thousand, five hundred seventy-one".