1225512144737 has 2 divisors, whose sum is σ = 1225512144738. Its totient is φ = 1225512144736.

The previous prime is 1225512144677. The next prime is 1225512144749. The reversal of 1225512144737 is 7374412155221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1140760708096 + 84751436641 = 1068064^2 + 291121^2 .

It is a cyclic number.

It is not a de Polignac number, because 1225512144737 - 2⁸ = 1225512144481 is a prime.

It is not a weakly prime, because it can be changed into another prime (1225512144937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612756072368 + 612756072369.

It is an arithmetic number, because the mean of its divisors is an integer number (612756072369).

Almost surely, 2^{1225512144737} is an apocalyptic number.

It is an amenable number.

1225512144737 is a deficient number, since it is larger than the sum of its proper divisors (1).

1225512144737 is an equidigital number, since it uses as much as digits as its factorization.

1225512144737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 470400, while the sum is 44.

Adding to 1225512144737 its reverse (7374412155221), we get a palindrome (8599924299958).

The spelling of 1225512144737 in words is "one trillion, two hundred twenty-five billion, five hundred twelve million, one hundred forty-four thousand, seven hundred thirty-seven".