6616425525 has 48 divisors (see below), whose sum is σ = 11426697216. Its totient is φ = 3371811520.

The previous prime is 6616425521. The next prime is 6616425533. The reversal of 6616425525 is 5255246166.

It is a happy number.

It is not a de Polignac number, because 6616425525 - 2² = 6616425521 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6616425521) 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, 2729464 + ... + 2731886.

It is an arithmetic number, because the mean of its divisors is an integer number (238056192).

Almost surely, 2^6616425525 is an apocalyptic number.

It is an amenable number.

6616425525 is a deficient number, since it is larger than the sum of its proper divisors (4810271691).

6616425525 is a wasteful number, since it uses less digits than its factorization.

6616425525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042 (or 4037 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 6616425525 is about 81341.4133452327. The cubic root of 6616425525 is about 1877.3322586565.

The spelling of 6616425525 in words is "six billion, six hundred sixteen million, four hundred twenty-five thousand, five hundred twenty-five".