1255131045187 has 2 divisors, whose sum is σ = 1255131045188. Its totient is φ = 1255131045186.

The previous prime is 1255131045137. The next prime is 1255131045211. The reversal of 1255131045187 is 7815401315521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1255131045187 - 2¹⁵ = 1255131012419 is a prime.

It is a super-2 number, since 2×1255131045187² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1255131045137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627565522593 + 627565522594.

It is an arithmetic number, because the mean of its divisors is an integer number (627565522594).

Almost surely, 2^{1255131045187} is an apocalyptic number.

1255131045187 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255131045187 is an equidigital number, since it uses as much as digits as its factorization.

1255131045187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168000, while the sum is 43.

The spelling of 1255131045187 in words is "one trillion, two hundred fifty-five billion, one hundred thirty-one million, forty-five thousand, one hundred eighty-seven".