1255131045137 has 2 divisors, whose sum is σ = 1255131045138. Its totient is φ = 1255131045136.

The previous prime is 1255131045071. The next prime is 1255131045187. The reversal of 1255131045137 is 7315401315521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149872327041 + 105258718096 = 1072321^2 + 324436^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255131045137 - 2²⁴ = 1255114267921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1255131045137.

It is not a weakly prime, because it can be changed into another prime (1255131045187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627565522568 + 627565522569.

It is an arithmetic number, because the mean of its divisors is an integer number (627565522569).

Almost surely, 2^{1255131045137} is an apocalyptic number.

It is an amenable number.

1255131045137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255131045137 is an equidigital number, since it uses as much as digits as its factorization.

1255131045137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 1255131045137 in words is "one trillion, two hundred fifty-five billion, one hundred thirty-one million, forty-five thousand, one hundred thirty-seven".