9856525631 has 16 divisors (see below), whose sum is σ = 10057478400. Its totient is φ = 9657983808.

The previous prime is 9856525603. The next prime is 9856525649. The reversal of 9856525631 is 1365256589.

It is a de Polignac number, because none of the positive numbers 2^k-9856525631 is a prime.

It is a super-2 number, since 2×9856525631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9856525631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9856525531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5527166 + ... + 5528948.

It is an arithmetic number, because the mean of its divisors is an integer number (628592400).

Almost surely, 2^9856525631 is an apocalyptic number.

9856525631 is a deficient number, since it is larger than the sum of its proper divisors (200952769).

9856525631 is a wasteful number, since it uses less digits than its factorization.

9856525631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398.

The product of its digits is 1944000, while the sum is 50.

The square root of 9856525631 is about 99280.0364171972. The cubic root of 9856525631 is about 2144.0814784156.

The spelling of 9856525631 in words is "nine billion, eight hundred fifty-six million, five hundred twenty-five thousand, six hundred thirty-one".