1305255405155 has 32 divisors (see below), whose sum is σ = 1786614314688. Its totient is φ = 906877440000.

The previous prime is 1305255405137. The next prime is 1305255405163. The reversal of 1305255405155 is 5515045525031.

It is not a de Polignac number, because 1305255405155 - 2²⁰ = 1305254356579 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3119300 + ... + 3512910.

It is an arithmetic number, because the mean of its divisors is an integer number (55831697334).

Almost surely, 2^{1305255405155} is an apocalyptic number.

1305255405155 is a deficient number, since it is larger than the sum of its proper divisors (481358909533).

1305255405155 is a wasteful number, since it uses less digits than its factorization.

1305255405155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396647.

The product of its (nonzero) digits is 375000, while the sum is 41.

The spelling of 1305255405155 in words is "one trillion, three hundred five billion, two hundred fifty-five million, four hundred five thousand, one hundred fifty-five".