137638818825 has 12 divisors (see below), whose sum is σ = 227562847248. Its totient is φ = 73407370000.

The previous prime is 137638818817. The next prime is 137638818827. The reversal of 137638818825 is 528818836731.

It is not a de Polignac number, because 137638818825 - 2³ = 137638818817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (137638818827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 917592051 + ... + 917592200.

It is an arithmetic number, because the mean of its divisors is an integer number (18963570604).

Almost surely, 2^137638818825 is an apocalyptic number.

137638818825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

137638818825 is a deficient number, since it is larger than the sum of its proper divisors (89924028423).

137638818825 is a wasteful number, since it uses less digits than its factorization.

137638818825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835184264 (or 1835184259 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 60.

The spelling of 137638818825 in words is "one hundred thirty-seven billion, six hundred thirty-eight million, eight hundred eighteen thousand, eight hundred twenty-five".