657225345222165 has 8 divisors (see below), whose sum is σ = 1051560552355488. Its totient is φ = 350520184118480.

The previous prime is 657225345222137. The next prime is 657225345222169. The reversal of 657225345222165 is 561222543522756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 657225345222165 - 2⁶ = 657225345222101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657225345222169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21907511507391 + ... + 21907511507420.

It is an arithmetic number, because the mean of its divisors is an integer number (131445069044436).

Almost surely, 2^{657225345222165} is an apocalyptic number.

It is an amenable number.

657225345222165 is a deficient number, since it is larger than the sum of its proper divisors (394335207133323).

657225345222165 is a wasteful number, since it uses less digits than its factorization.

657225345222165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43815023014819.

The product of its digits is 60480000, while the sum is 57.

The spelling of 657225345222165 in words is "six hundred fifty-seven trillion, two hundred twenty-five billion, three hundred forty-five million, two hundred twenty-two thousand, one hundred sixty-five".