1255403340140 has 48 divisors (see below), whose sum is σ = 2726614566144. Its totient is φ = 485029708800.

The previous prime is 1255403340097. The next prime is 1255403340223. The reversal of 1255403340140 is 410433045521.

It is a junction number, because it is equal to n+sod(n) for n = 1255403340097 and 1255403340106.

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, 1620209 + ... + 2266248.

It is an arithmetic number, because the mean of its divisors is an integer number (56804470128).

Almost surely, 2^{1255403340140} is an apocalyptic number.

1255403340140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255403340140 is an abundant number, since it is smaller than the sum of its proper divisors (1471211226004).

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

1255403340140 is a wasteful number, since it uses less digits than its factorization.

1255403340140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3887018 (or 3887016 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 1255403340140 its reverse (410433045521), we get a palindrome (1665836385661).

The spelling of 1255403340140 in words is "one trillion, two hundred fifty-five billion, four hundred three million, three hundred forty thousand, one hundred forty".