123255513244525 has 6 divisors (see below), whose sum is σ = 152836836423242. Its totient is φ = 98604410595600.

The previous prime is 123255513244469. The next prime is 123255513244531. The reversal of 123255513244525 is 525442315552321.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10171239020644 + 113084274223881 = 3189238^2 + 10634109^2 .

It is not a de Polignac number, because 123255513244525 - 2⁷ = 123255513244397 is a prime.

It is a Duffinian number.

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, 2465110264866 + ... + 2465110264915.

Almost surely, 2^{123255513244525} is an apocalyptic number.

It is an amenable number.

123255513244525 is a deficient number, since it is larger than the sum of its proper divisors (29581323178717).

123255513244525 is an equidigital number, since it uses as much as digits as its factorization.

123255513244525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930220529791 (or 4930220529786 counting only the distinct ones).

The product of its digits is 7200000, while the sum is 49.

Adding to 123255513244525 its reverse (525442315552321), we get a palindrome (648697828796846).

The spelling of 123255513244525 in words is "one hundred twenty-three trillion, two hundred fifty-five billion, five hundred thirteen million, two hundred forty-four thousand, five hundred twenty-five".