1225512144677 has 2 divisors, whose sum is σ = 1225512144678. Its totient is φ = 1225512144676.

The previous prime is 1225512144671. The next prime is 1225512144737. The reversal of 1225512144677 is 7764412155221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 960411760036 + 265100384641 = 980006^2 + 514879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225512144677 - 2²⁰ = 1225511096101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1225512144671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612756072338 + 612756072339.

It is an arithmetic number, because the mean of its divisors is an integer number (612756072339).

Almost surely, 2^{1225512144677} is an apocalyptic number.

It is an amenable number.

1225512144677 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225512144677 is an equidigital number, since it uses as much as digits as its factorization.

1225512144677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940800, while the sum is 47.

Adding to 1225512144677 its reverse (7764412155221), we get a palindrome (8989924299898).

The spelling of 1225512144677 in words is "one trillion, two hundred twenty-five billion, five hundred twelve million, one hundred forty-four thousand, six hundred seventy-seven".