5157125665 has 16 divisors (see below), whose sum is σ = 6607801728. Its totient is φ = 3854543616.

The previous prime is 5157125647. The next prime is 5157125669. The reversal of 5157125665 is 5665217515.

It is a cyclic number.

It is not a de Polignac number, because 5157125665 - 2⁷ = 5157125537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5157125669) 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 15 ways as a sum of consecutive naturals, for example, 516504 + ... + 526393.

It is an arithmetic number, because the mean of its divisors is an integer number (412987608).

Almost surely, 2^5157125665 is an apocalyptic number.

It is an amenable number.

5157125665 is a deficient number, since it is larger than the sum of its proper divisors (1450676063).

5157125665 is a wasteful number, since it uses less digits than its factorization.

5157125665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042968.

The product of its digits is 315000, while the sum is 43.

The square root of 5157125665 is about 71813.1301712995. The cubic root of 5157125665 is about 1727.7035993935.

The spelling of 5157125665 in words is "five billion, one hundred fifty-seven million, one hundred twenty-five thousand, six hundred sixty-five".