1255551433533 has 12 divisors (see below), whose sum is σ = 1814668807068. Its totient is φ = 836529128640.

The previous prime is 1255551433523. The next prime is 1255551433561. The reversal of 1255551433533 is 3353341555521.

1255551433533 is a `hidden beast` number, since 1 + 2 + 5 + 5 + 551 + 43 + 3 + 53 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 282809112804 + 972742320729 = 531798^2 + 986277^2 .

It is not a de Polignac number, because 1255551433533 - 2¹⁴ = 1255551417149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255551433523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42080958 + ... + 42110783.

It is an arithmetic number, because the mean of its divisors is an integer number (151222400589).

Almost surely, 2^{1255551433533} is an apocalyptic number.

It is an amenable number.

1255551433533 is a deficient number, since it is larger than the sum of its proper divisors (559117373535).

1255551433533 is a wasteful number, since it uses less digits than its factorization.

1255551433533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84193404 (or 84193401 counting only the distinct ones).

The product of its digits is 2025000, while the sum is 45.

The spelling of 1255551433533 in words is "one trillion, two hundred fifty-five billion, five hundred fifty-one million, four hundred thirty-three thousand, five hundred thirty-three".