5166125806 has 4 divisors (see below), whose sum is σ = 7749188712. Its totient is φ = 2583062902.

The previous prime is 5166125803. The next prime is 5166125819. The reversal of 5166125806 is 6085216615.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166125803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1291531450 + ... + 1291531453.

It is an arithmetic number, because the mean of its divisors is an integer number (1937297178).

Almost surely, 2^5166125806 is an apocalyptic number.

5166125806 is a deficient number, since it is larger than the sum of its proper divisors (2583062906).

5166125806 is a wasteful number, since it uses less digits than its factorization.

5166125806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2583062905.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 5166125806 is about 71875.7664724349. The cubic root of 5166125806 is about 1728.7080697218.

The spelling of 5166125806 in words is "five billion, one hundred sixty-six million, one hundred twenty-five thousand, eight hundred six".