656950225 has 12 divisors (see below), whose sum is σ = 814947840. Its totient is φ = 525347600.

The previous prime is 656950223. The next prime is 656950267. The reversal of 656950225 is 522059656.

It is a happy number.

It is not a de Polignac number, because 656950225 - 2¹ = 656950223 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656950223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94416 + ... + 101134.

It is an arithmetic number, because the mean of its divisors is an integer number (67912320).

Almost surely, 2^656950225 is an apocalyptic number.

It is an amenable number.

656950225 is a deficient number, since it is larger than the sum of its proper divisors (157997615).

656950225 is a wasteful number, since it uses less digits than its factorization.

656950225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640 (or 10635 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 656950225 is about 25631.0402637115. The cubic root of 656950225 is about 869.3156308177.

The spelling of 656950225 in words is "six hundred fifty-six million, nine hundred fifty thousand, two hundred twenty-five".