123525063021 has 16 divisors (see below), whose sum is σ = 165571067520. Its totient is φ = 81915694080.

The previous prime is 123525063017. The next prime is 123525063049. The reversal of 123525063021 is 120360525321.

It is not a de Polignac number, because 123525063021 - 2² = 123525063017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123525063021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123525063001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290536 + ... + 575726.

It is an arithmetic number, because the mean of its divisors is an integer number (10348191720).

Almost surely, 2^123525063021 is an apocalyptic number.

It is an amenable number.

123525063021 is a deficient number, since it is larger than the sum of its proper divisors (42046004499).

123525063021 is a wasteful number, since it uses less digits than its factorization.

123525063021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285956.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 123525063021 its reverse (120360525321), we get a palindrome (243885588342).

The spelling of 123525063021 in words is "one hundred twenty-three billion, five hundred twenty-five million, sixty-three thousand, twenty-one".