1255351650985 has 32 divisors (see below), whose sum is σ = 1567548288000. Its totient is φ = 963941803776.

The previous prime is 1255351650983. The next prime is 1255351651009. The reversal of 1255351650985 is 5890561535521.

It is not a de Polignac number, because 1255351650985 - 2¹ = 1255351650983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1255351650983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130367151 + ... + 130376779.

It is an arithmetic number, because the mean of its divisors is an integer number (48985884000).

Almost surely, 2^{1255351650985} is an apocalyptic number.

It is an amenable number.

1255351650985 is a deficient number, since it is larger than the sum of its proper divisors (312196637015).

1255351650985 is a wasteful number, since it uses less digits than its factorization.

1255351650985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14865.

The product of its (nonzero) digits is 8100000, while the sum is 55.

The spelling of 1255351650985 in words is "one trillion, two hundred fifty-five billion, three hundred fifty-one million, six hundred fifty thousand, nine hundred eighty-five".