125543234441 has 4 divisors (see below), whose sum is σ = 125545213332. Its totient is φ = 125541255552.

The previous prime is 125543234417. The next prime is 125543234447. The reversal of 125543234441 is 144432345521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144432345521 = 2971 ⋅48614051.

It can be written as a sum of positive squares in 2 ways, for example, as 119011200400 + 6532034041 = 344980^2 + 80821^2 .

It is a cyclic number.

It is not a de Polignac number, because 125543234441 - 2¹⁸ = 125542972297 is a prime.

It is a super-2 number, since 2×125543234441² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 125543234395 and 125543234404.

It is not an unprimeable number, because it can be changed into a prime (125543234447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 891020 + ... + 1022253.

It is an arithmetic number, because the mean of its divisors is an integer number (31386303333).

Almost surely, 2^125543234441 is an apocalyptic number.

It is an amenable number.

125543234441 is a deficient number, since it is larger than the sum of its proper divisors (1978891).

125543234441 is an equidigital number, since it uses as much as digits as its factorization.

125543234441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1978890.

The product of its digits is 230400, while the sum is 38.

Adding to 125543234441 its reverse (144432345521), we get a palindrome (269975579962).

The spelling of 125543234441 in words is "one hundred twenty-five billion, five hundred forty-three million, two hundred thirty-four thousand, four hundred forty-one".