123623563925 has 12 divisors (see below), whose sum is σ = 153404263716. Its totient is φ = 98827209600.

The previous prime is 123623563913. The next prime is 123623563927. The reversal of 123623563925 is 529365326321.

It can be written as a sum of positive squares in 6 ways, for example, as 8684935249 + 114938628676 = 93193^2 + 339026^2 .

It is not a de Polignac number, because 123623563925 - 2²⁸ = 123355128469 is a prime.

It is a super-2 number, since 2×123623563925² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123623563925.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123623563927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1755824 + ... + 1824873.

It is an arithmetic number, because the mean of its divisors is an integer number (12783688643).

Almost surely, 2^123623563925 is an apocalyptic number.

It is an amenable number.

123623563925 is a deficient number, since it is larger than the sum of its proper divisors (29780699791).

123623563925 is a wasteful number, since it uses less digits than its factorization.

123623563925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3582088 (or 3582083 counting only the distinct ones).

The product of its digits is 1749600, while the sum is 47.

The spelling of 123623563925 in words is "one hundred twenty-three billion, six hundred twenty-three million, five hundred sixty-three thousand, nine hundred twenty-five".