22725748138 has 48 divisors (see below), whose sum is σ = 37921110336. Its totient is φ = 10159888640.

The previous prime is 22725748127. The next prime is 22725748159. The reversal of 22725748138 is 83184752722.

It is a junction number, because it is equal to n+sod(n) for n = 22725748091 and 22725748100.

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, 23403993 + ... + 23404963.

It is an arithmetic number, because the mean of its divisors is an integer number (790023132).

Almost surely, 2^22725748138 is an apocalyptic number.

22725748138 is a deficient number, since it is larger than the sum of its proper divisors (15195362198).

22725748138 is a wasteful number, since it uses less digits than its factorization.

22725748138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359 (or 1186 counting only the distinct ones).

The product of its digits is 1505280, while the sum is 49.

The spelling of 22725748138 in words is "twenty-two billion, seven hundred twenty-five million, seven hundred forty-eight thousand, one hundred thirty-eight".