6625512717 has 4 divisors (see below), whose sum is σ = 8834016960. Its totient is φ = 4417008476.

The previous prime is 6625512709. The next prime is 6625512721. The reversal of 6625512717 is 7172155266.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6625512717 - 2³ = 6625512709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6625512737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1104252117 + ... + 1104252122.

It is an arithmetic number, because the mean of its divisors is an integer number (2208504240).

Almost surely, 2^6625512717 is an apocalyptic number.

It is an amenable number.

6625512717 is a deficient number, since it is larger than the sum of its proper divisors (2208504243).

6625512717 is a wasteful number, since it uses less digits than its factorization.

6625512717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208504242.

The product of its digits is 176400, while the sum is 42.

The square root of 6625512717 is about 81397.2525150573. The cubic root of 6625512717 is about 1878.1913264661.

The spelling of 6625512717 in words is "six billion, six hundred twenty-five million, five hundred twelve thousand, seven hundred seventeen".