123013521325 has 6 divisors (see below), whose sum is σ = 152536766474. Its totient is φ = 98410817040.

The previous prime is 123013521289. The next prime is 123013521353. The reversal of 123013521325 is 523125310321.

It can be written as a sum of positive squares in 3 ways, for example, as 6477996196 + 116535525129 = 80486^2 + 341373^2 .

It is a de Polignac number, because none of the positive numbers 2^k-123013521325 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123013521293 and 123013521302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2460270402 + ... + 2460270451.

Almost surely, 2^123013521325 is an apocalyptic number.

It is an amenable number.

123013521325 is a deficient number, since it is larger than the sum of its proper divisors (29523245149).

123013521325 is an equidigital number, since it uses as much as digits as its factorization.

123013521325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920540863 (or 4920540858 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 123013521325 its reverse (523125310321), we get a palindrome (646138831646).

The spelling of 123013521325 in words is "one hundred twenty-three billion, thirteen million, five hundred twenty-one thousand, three hundred twenty-five".