1255312355515 has 32 divisors (see below), whose sum is σ = 1525101811200. Its totient is φ = 991847151360.

The previous prime is 1255312355489. The next prime is 1255312355597. The reversal of 1255312355515 is 5155532135521.

It is not a de Polignac number, because 1255312355515 - 2¹¹ = 1255312353467 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 170346751 + ... + 170354119.

It is an arithmetic number, because the mean of its divisors is an integer number (47659431600).

Almost surely, 2^{1255312355515} is an apocalyptic number.

1255312355515 is a deficient number, since it is larger than the sum of its proper divisors (269789455685).

1255312355515 is a wasteful number, since it uses less digits than its factorization.

1255312355515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8707.

The product of its digits is 562500, while the sum is 43.

The spelling of 1255312355515 in words is "one trillion, two hundred fifty-five billion, three hundred twelve million, three hundred fifty-five thousand, five hundred fifteen".