656425011 has 8 divisors (see below), whose sum is σ = 954800064. Its totient is φ = 397833320.

The previous prime is 656425001. The next prime is 656425039. The reversal of 656425011 is 110524656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 656425011 - 2¹⁸ = 656162867 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 656425011.

It is not an unprimeable number, because it can be changed into a prime (656425001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9945801 + ... + 9945866.

It is an arithmetic number, because the mean of its divisors is an integer number (119350008).

Almost surely, 2^656425011 is an apocalyptic number.

656425011 is a deficient number, since it is larger than the sum of its proper divisors (298375053).

656425011 is a wasteful number, since it uses less digits than its factorization.

656425011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19891681.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 656425011 is about 25620.7925521440. The cubic root of 656425011 is about 869.0839042475.

Adding to 656425011 its reverse (110524656), we get a palindrome (766949667).

The spelling of 656425011 in words is "six hundred fifty-six million, four hundred twenty-five thousand, eleven".