6616136725 has 48 divisors (see below), whose sum is σ = 9056991744. Its totient is φ = 4754520000.

The previous prime is 6616136719. The next prime is 6616136729. The reversal of 6616136725 is 5276316166.

It is not a de Polignac number, because 6616136725 - 2²³ = 6607748117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616136729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11751294 + ... + 11751856.

It is an arithmetic number, because the mean of its divisors is an integer number (188687328).

Almost surely, 2^6616136725 is an apocalyptic number.

It is an amenable number.

6616136725 is a deficient number, since it is larger than the sum of its proper divisors (2440855019).

6616136725 is a wasteful number, since it uses less digits than its factorization.

6616136725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 1013 counting only the distinct ones).

The product of its digits is 272160, while the sum is 43.

The square root of 6616136725 is about 81339.6380923840. The cubic root of 6616136725 is about 1877.3049437343.

It can be divided in two parts, 6616 and 136725, that added together give a palindrome (143341).

The spelling of 6616136725 in words is "six billion, six hundred sixteen million, one hundred thirty-six thousand, seven hundred twenty-five".