648277225 has 12 divisors (see below), whose sum is σ = 804202000. Its totient is φ = 518403600.

The previous prime is 648277187. The next prime is 648277229. The reversal of 648277225 is 522772846.

It is a de Polignac number, because none of the positive numbers 2^k-648277225 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (648277229) 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 in 11 ways as a sum of consecutive naturals, for example, 83770 + ... + 91180.

Almost surely, 2^648277225 is an apocalyptic number.

It is an amenable number.

648277225 is a deficient number, since it is larger than the sum of its proper divisors (155924775).

648277225 is a wasteful number, since it uses less digits than its factorization.

648277225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920 (or 10915 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The square root of 648277225 is about 25461.2887537139. The cubic root of 648277225 is about 865.4731281823.

The spelling of 648277225 in words is "six hundred forty-eight million, two hundred seventy-seven thousand, two hundred twenty-five".