125413553123 has 4 divisors (see below), whose sum is σ = 125415842160. Its totient is φ = 125411264088.

The previous prime is 125413553087. The next prime is 125413553131. The reversal of 125413553123 is 321355314521.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125413553123 - 2²⁶ = 125346444259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125413553173) 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, 1060268 + ... + 1172601.

It is an arithmetic number, because the mean of its divisors is an integer number (31353960540).

Almost surely, 2^125413553123 is an apocalyptic number.

125413553123 is a deficient number, since it is larger than the sum of its proper divisors (2289037).

125413553123 is an equidigital number, since it uses as much as digits as its factorization.

125413553123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2289036.

The product of its digits is 54000, while the sum is 35.

Adding to 125413553123 its reverse (321355314521), we get a palindrome (446768867644).

The spelling of 125413553123 in words is "one hundred twenty-five billion, four hundred thirteen million, five hundred fifty-three thousand, one hundred twenty-three".