123551423222525 has 24 divisors (see below), whose sum is σ = 165377377313280. Its totient is φ = 91283570248640.

The previous prime is 123551423222519. The next prime is 123551423222561. The reversal of 123551423222525 is 525222324155321.

It is not a de Polignac number, because 123551423222525 - 2²⁴ = 123551406445309 is a prime.

It is a super-2 number, since 2×123551423222525² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3704673677 + ... + 3704707026.

It is an arithmetic number, because the mean of its divisors is an integer number (6890724054720).

Almost surely, 2^{123551423222525} is an apocalyptic number.

It is an amenable number.

123551423222525 is a deficient number, since it is larger than the sum of its proper divisors (41825954090755).

123551423222525 is a wasteful number, since it uses less digits than its factorization.

123551423222525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409380765 (or 7409380760 counting only the distinct ones).

The product of its digits is 1440000, while the sum is 44.

Adding to 123551423222525 its reverse (525222324155321), we get a palindrome (648773747377846).

The spelling of 123551423222525 in words is "one hundred twenty-three trillion, five hundred fifty-one billion, four hundred twenty-three million, two hundred twenty-two thousand, five hundred twenty-five".