125543452105 has 8 divisors (see below), whose sum is σ = 150654363912. Its totient is φ = 100433280768.

The previous prime is 125543452091. The next prime is 125543452123. The reversal of 125543452105 is 501254345521.

It can be written as a sum of positive squares in 4 ways, for example, as 32881656889 + 92661795216 = 181333^2 + 304404^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 125543452105 - 2²⁵ = 125509897673 is a prime.

It is a super-2 number, since 2×125543452105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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, 306657 + ... + 587473.

It is an arithmetic number, because the mean of its divisors is an integer number (18831795489).

Almost surely, 2^125543452105 is an apocalyptic number.

It is an amenable number.

125543452105 is a deficient number, since it is larger than the sum of its proper divisors (25110911807).

125543452105 is an equidigital number, since it uses as much as digits as its factorization.

125543452105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370235.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 125543452105 its reverse (501254345521), we get a palindrome (626797797626).

The spelling of 125543452105 in words is "one hundred twenty-five billion, five hundred forty-three million, four hundred fifty-two thousand, one hundred five".