5125613138 has 4 divisors (see below), whose sum is σ = 7688419710. Its totient is φ = 2562806568.

The previous prime is 5125613131. The next prime is 5125613179. The reversal of 5125613138 is 8313165215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4027552369 + 1098060769 = 63463^2 + 33137^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5125613098 and 5125613107.

It is not an unprimeable number, because it can be changed into a prime (5125613131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281403283 + ... + 1281403286.

Almost surely, 2^5125613138 is an apocalyptic number.

5125613138 is a deficient number, since it is larger than the sum of its proper divisors (2562806572).

5125613138 is a wasteful number, since it uses less digits than its factorization.

5125613138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562806571.

The product of its digits is 21600, while the sum is 35.

The square root of 5125613138 is about 71593.3875298550. The cubic root of 5125613138 is about 1724.1773729951.

The spelling of 5125613138 in words is "five billion, one hundred twenty-five million, six hundred thirteen thousand, one hundred thirty-eight".