1255838539400 has 48 divisors (see below), whose sum is σ = 2927448345600. Its totient is φ = 501023804480.

The previous prime is 1255838539387. The next prime is 1255838539441. The reversal of 1255838539400 is 49358385521.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8120780 + ... + 8273979.

It is an arithmetic number, because the mean of its divisors is an integer number (60988507200).

Almost surely, 2^{1255838539400} is an apocalyptic number.

1255838539400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255838539400 is an abundant number, since it is smaller than the sum of its proper divisors (1671609806200).

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

1255838539400 is a wasteful number, since it uses less digits than its factorization.

1255838539400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16395158 (or 16395149 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 53.

The spelling of 1255838539400 in words is "one trillion, two hundred fifty-five billion, eight hundred thirty-eight million, five hundred thirty-nine thousand, four hundred".