657225133 has 2 divisors, whose sum is σ = 657225134. Its totient is φ = 657225132.

The previous prime is 657225113. The next prime is 657225167. The reversal of 657225133 is 331522756.

It is an a-pointer prime, because the next prime (657225167) can be obtained adding 657225133 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432764809 + 224460324 = 20803^2 + 14982^2 .

It is a cyclic number.

It is not a de Polignac number, because 657225133 - 2²¹ = 655127981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657225103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328612566 + 328612567.

It is an arithmetic number, because the mean of its divisors is an integer number (328612567).

Almost surely, 2^657225133 is an apocalyptic number.

It is an amenable number.

657225133 is a deficient number, since it is larger than the sum of its proper divisors (1).

657225133 is an equidigital number, since it uses as much as digits as its factorization.

657225133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37800, while the sum is 34.

The square root of 657225133 is about 25636.4024972304. The cubic root of 657225133 is about 869.4368721159.

Adding to 657225133 its reverse (331522756), we get a palindrome (988747889).

The spelling of 657225133 in words is "six hundred fifty-seven million, two hundred twenty-five thousand, one hundred thirty-three".