657225007 has 2 divisors, whose sum is σ = 657225008. Its totient is φ = 657225006.

The previous prime is 657224987. The next prime is 657225047. The reversal of 657225007 is 700522756.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 657225007 - 2¹¹ = 657222959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657225047) 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, 328612503 + 328612504.

It is an arithmetic number, because the mean of its divisors is an integer number (328612504).

Almost surely, 2^657225007 is an apocalyptic number.

657225007 is a deficient number, since it is larger than the sum of its proper divisors (1).

657225007 is an equidigital number, since it uses as much as digits as its factorization.

657225007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 34.

The square root of 657225007 is about 25636.4000397872. The cubic root of 657225007 is about 869.4368165545.

The spelling of 657225007 in words is "six hundred fifty-seven million, two hundred twenty-five thousand, seven".