6651625325 has 6 divisors (see below), whose sum is σ = 8248015434. Its totient is φ = 5321300240.

The previous prime is 6651625297. The next prime is 6651625327. The reversal of 6651625325 is 5235261566.

It can be written as a sum of positive squares in 3 ways, for example, as 775789609 + 5875835716 = 27853^2 + 76654^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6651625325 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 (6651625327) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133032482 + ... + 133032531.

It is an arithmetic number, because the mean of its divisors is an integer number (1374669239).

Almost surely, 2^6651625325 is an apocalyptic number.

It is an amenable number.

6651625325 is a deficient number, since it is larger than the sum of its proper divisors (1596390109).

6651625325 is a wasteful number, since it uses less digits than its factorization.

6651625325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266065023 (or 266065018 counting only the distinct ones).

The product of its digits is 324000, while the sum is 41.

The square root of 6651625325 is about 81557.4970496275. The cubic root of 6651625325 is about 1880.6555474735.

The spelling of 6651625325 in words is "six billion, six hundred fifty-one million, six hundred twenty-five thousand, three hundred twenty-five".