123012242052525 has 72 divisors (see below), whose sum is σ = 257660016511040. Its totient is φ = 54926396421120.

The previous prime is 123012242052521. The next prime is 123012242052587. The reversal of 123012242052525 is 525250242210321.

123012242052525 is a `hidden beast` number, since 1 + 2 + 3 + 0 + 122 + 4 + 2 + 0 + 5 + 2 + 525 = 666.

It is not a de Polignac number, because 123012242052525 - 2² = 123012242052521 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123012242052525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123012242052521) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 908106820 + ... + 908242269.

Almost surely, 2^{123012242052525} is an apocalyptic number.

123012242052525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123012242052525 is an abundant number, since it is smaller than the sum of its proper divisors (134647774458515).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123012242052525 is a wasteful number, since it uses less digits than its factorization.

123012242052525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1816349155 (or 1816349147 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 123012242052525 its reverse (525250242210321), we get a palindrome (648262484262846).

The spelling of 123012242052525 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty-two million, fifty-two thousand, five hundred twenty-five".