1255433424540 has 24 divisors (see below), whose sum is σ = 3515213588880. Its totient is φ = 334782246528.

The previous prime is 1255433424517. The next prime is 1255433424571. The reversal of 1255433424540 is 454243345521.

It is a super-2 number, since 2×1255433424540² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255433424492 and 1255433424501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10461945145 + ... + 10461945264.

It is an arithmetic number, because the mean of its divisors is an integer number (146467232870).

Almost surely, 2^{1255433424540} is an apocalyptic number.

1255433424540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1255433424540 is an abundant number, since it is smaller than the sum of its proper divisors (2259780164340).

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

1255433424540 is a wasteful number, since it uses less digits than its factorization.

1255433424540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20923890421 (or 20923890419 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 42.

The spelling of 1255433424540 in words is "one trillion, two hundred fifty-five billion, four hundred thirty-three million, four hundred twenty-four thousand, five hundred forty".