1255005155473 has 2 divisors, whose sum is σ = 1255005155474. Its totient is φ = 1255005155472.

The previous prime is 1255005155471. The next prime is 1255005155531. The reversal of 1255005155473 is 3745515005521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1079651917969 + 175353237504 = 1039063^2 + 418752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1255005155473 - 2¹ = 1255005155471 is a prime.

Together with 1255005155471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1255005155471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627502577736 + 627502577737.

It is an arithmetic number, because the mean of its divisors is an integer number (627502577737).

Almost surely, 2^{1255005155473} is an apocalyptic number.

It is an amenable number.

1255005155473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1255005155473 is an equidigital number, since it uses as much as digits as its factorization.

1255005155473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 525000, while the sum is 43.

The spelling of 1255005155473 in words is "one trillion, two hundred fifty-five billion, five million, one hundred fifty-five thousand, four hundred seventy-three".