657645750325 has 12 divisors (see below), whose sum is σ = 825305802048. Its totient is φ = 519777844400.

The previous prime is 657645750323. The next prime is 657645750337. The reversal of 657645750325 is 523057546756.

It is not a de Polignac number, because 657645750325 - 2¹ = 657645750323 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 (657645750323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158466781 + ... + 158470930.

It is an arithmetic number, because the mean of its divisors is an integer number (68775483504).

Almost surely, 2^657645750325 is an apocalyptic number.

It is an amenable number.

657645750325 is a deficient number, since it is larger than the sum of its proper divisors (167660051723).

657645750325 is a wasteful number, since it uses less digits than its factorization.

657645750325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316937804 (or 316937799 counting only the distinct ones).

The product of its (nonzero) digits is 26460000, while the sum is 55.

The spelling of 657645750325 in words is "six hundred fifty-seven billion, six hundred forty-five million, seven hundred fifty thousand, three hundred twenty-five".