7657225217 has 4 divisors (see below), whose sum is σ = 7657408176. Its totient is φ = 7657042260.

The previous prime is 7657225183. The next prime is 7657225223. The reversal of 7657225217 is 7125227567.

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 a de Polignac number, because none of the positive numbers 2^k-7657225217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7657224217) 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, 5738 + ... + 123884.

It is an arithmetic number, because the mean of its divisors is an integer number (1914352044).

Almost surely, 2^7657225217 is an apocalyptic number.

It is an amenable number.

7657225217 is a deficient number, since it is larger than the sum of its proper divisors (182959).

7657225217 is a wasteful number, since it uses less digits than its factorization.

7657225217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182958.

The product of its digits is 411600, while the sum is 44.

The square root of 7657225217 is about 87505.5724911277. The cubic root of 7657225217 is about 1971.0174699724.

The spelling of 7657225217 in words is "seven billion, six hundred fifty-seven million, two hundred twenty-five thousand, two hundred seventeen".