123354435452525 has 12 divisors (see below), whose sum is σ = 154678146030900. Its totient is φ = 97574744446080.

The previous prime is 123354435452467. The next prime is 123354435452527. The reversal of 123354435452525 is 525254534453321.

It can be written as a sum of positive squares in 6 ways, for example, as 38122894291876 + 85231541160649 = 6174374^2 + 9232093^2 .

It is not a de Polignac number, because 123354435452525 - 2⁶ = 123354435452461 is a prime.

It is a super-2 number, since 2×123354435452525² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123354435452527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27720095630 + ... + 27720100079.

It is an arithmetic number, because the mean of its divisors is an integer number (12889845502575).

Almost surely, 2^{123354435452525} is an apocalyptic number.

It is an amenable number.

123354435452525 is a deficient number, since it is larger than the sum of its proper divisors (31323710578375).

123354435452525 is an equidigital number, since it uses as much as digits as its factorization.

123354435452525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55440195808 (or 55440195803 counting only the distinct ones).

The product of its digits is 43200000, while the sum is 53.

The spelling of 123354435452525 in words is "one hundred twenty-three trillion, three hundred fifty-four billion, four hundred thirty-five million, four hundred fifty-two thousand, five hundred twenty-five".