1255605830815 has 16 divisors (see below), whose sum is σ = 1722239308800. Its totient is φ = 860854056480.

The previous prime is 1255605830767. The next prime is 1255605830821. The reversal of 1255605830815 is 5180385065521.

It is not a de Polignac number, because 1255605830815 - 2²⁵ = 1255572276383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2536215 + ... + 2990584.

It is an arithmetic number, because the mean of its divisors is an integer number (107639956800).

Almost surely, 2^{1255605830815} is an apocalyptic number.

1255605830815 is a deficient number, since it is larger than the sum of its proper divisors (466633477985).

1255605830815 is an equidigital number, since it uses as much as digits as its factorization.

1255605830815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5533302.

The product of its (nonzero) digits is 1440000, while the sum is 49.

The spelling of 1255605830815 in words is "one trillion, two hundred fifty-five billion, six hundred five million, eight hundred thirty thousand, eight hundred fifteen".