1255378754988 has 72 divisors (see below), whose sum is σ = 3464051456320. Its totient is φ = 396435390480.

The previous prime is 1255378754947. The next prime is 1255378755011. The reversal of 1255378754988 is 8894578735521.

1255378754988 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 3 + 78 + 7 + 549 + 8 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33969478 + ... + 34006413.

Almost surely, 2^{1255378754988} is an apocalyptic number.

1255378754988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1255378754988 is an abundant number, since it is smaller than the sum of its proper divisors (2208672701332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1255378754988 is a wasteful number, since it uses less digits than its factorization.

1255378754988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67975929 (or 67975915 counting only the distinct ones).

The product of its digits is 677376000, while the sum is 72.

The spelling of 1255378754988 in words is "one trillion, two hundred fifty-five billion, three hundred seventy-eight million, seven hundred fifty-four thousand, nine hundred eighty-eight".