123137200025 has 24 divisors (see below), whose sum is σ = 174523038144. Its totient is φ = 84427243200.

The previous prime is 123137199979. The next prime is 123137200037. The reversal of 123137200025 is 520002731321.

It is not a de Polignac number, because 123137200025 - 2⁶ = 123137199961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123137199967 and 123137200003.

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, 1702499 + ... + 1773351.

It is an arithmetic number, because the mean of its divisors is an integer number (7271793256).

Almost surely, 2^123137200025 is an apocalyptic number.

It is an amenable number.

123137200025 is a deficient number, since it is larger than the sum of its proper divisors (51385838119).

123137200025 is an equidigital number, since it uses as much as digits as its factorization.

123137200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80801 (or 80796 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

Adding to 123137200025 its reverse (520002731321), we get a palindrome (643139931346).

The spelling of 123137200025 in words is "one hundred twenty-three billion, one hundred thirty-seven million, two hundred thousand, twenty-five".