648355250 has 16 divisors (see below), whose sum is σ = 1213721496. Its totient is φ = 259342000.

The previous prime is 648355249. The next prime is 648355261. The reversal of 648355250 is 52553846.

648355250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 192404641 + 455950609 = 13871^2 + 21353^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1296461 + ... + 1296960.

Almost surely, 2^648355250 is an apocalyptic number.

648355250 is a deficient number, since it is larger than the sum of its proper divisors (565366246).

648355250 is a wasteful number, since it uses less digits than its factorization.

648355250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2593438 (or 2593428 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 38.

The square root of 648355250 is about 25462.8209356308. The cubic root of 648355250 is about 865.5078488384.

The spelling of 648355250 in words is "six hundred forty-eight million, three hundred fifty-five thousand, two hundred fifty".