1255236543 has 12 divisors (see below), whose sum is σ = 1977948648. Its totient is φ = 760749360.

The previous prime is 1255236511. The next prime is 1255236559. The reversal of 1255236543 is 3456325521.

1255236543 is a `hidden beast` number, since 1 + 2 + 552 + 3 + 65 + 43 = 666.

It is not a de Polignac number, because 1255236543 - 2⁵ = 1255236511 is a prime.

It is a super-3 number, since 3×1255236543³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255236498 and 1255236507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1255236503) 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, 6339480 + ... + 6339677.

It is an arithmetic number, because the mean of its divisors is an integer number (164829054).

Almost surely, 2^1255236543 is an apocalyptic number.

1255236543 is a deficient number, since it is larger than the sum of its proper divisors (722712105).

1255236543 is a wasteful number, since it uses less digits than its factorization.

1255236543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679174 (or 12679171 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 1255236543 is about 35429.3175632837. The cubic root of 1255236543 is about 1078.7194880076.

The spelling of 1255236543 in words is "one billion, two hundred fifty-five million, two hundred thirty-six thousand, five hundred forty-three".