657043225 has 24 divisors (see below), whose sum is σ = 856264640. Its totient is φ = 499504320.

The previous prime is 657043223. The next prime is 657043241. The reversal of 657043225 is 522340756.

It is not a de Polignac number, because 657043225 - 2¹ = 657043223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (657043223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31516 + ... + 48034.

Almost surely, 2^657043225 is an apocalyptic number.

It is an amenable number.

657043225 is a deficient number, since it is larger than the sum of its proper divisors (199221415).

657043225 is a wasteful number, since it uses less digits than its factorization.

657043225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16609 (or 16604 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 657043225 is about 25632.8544060157. The cubic root of 657043225 is about 869.3566499269.

The spelling of 657043225 in words is "six hundred fifty-seven million, forty-three thousand, two hundred twenty-five".