123530105303525 has 12 divisors (see below), whose sum is σ = 153177570201504. Its totient is φ = 98823929646000.

The previous prime is 123530105303519. The next prime is 123530105303533. The reversal of 123530105303525 is 525303501035321.

It is not a de Polignac number, because 123530105303525 - 2¹² = 123530105299429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14066960 + ... + 21093590.

It is an arithmetic number, because the mean of its divisors is an integer number (12764797516792).

Almost surely, 2^{123530105303525} is an apocalyptic number.

It is an amenable number.

123530105303525 is a deficient number, since it is larger than the sum of its proper divisors (29647464897979).

123530105303525 is an equidigital number, since it uses as much as digits as its factorization.

123530105303525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729852 (or 7729847 counting only the distinct ones).

The product of its (nonzero) digits is 202500, while the sum is 38.

Adding to 123530105303525 its reverse (525303501035321), we get a palindrome (648833606338846).

The spelling of 123530105303525 in words is "one hundred twenty-three trillion, five hundred thirty billion, one hundred five million, three hundred three thousand, five hundred twenty-five".