9628581525 has 12 divisors (see below), whose sum is σ = 15919254912. Its totient is φ = 5135243440.

The previous prime is 9628581511. The next prime is 9628581553. The reversal of 9628581525 is 5251858269.

It is a happy number.

It is not a de Polignac number, because 9628581525 - 2⁶ = 9628581461 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64190469 + ... + 64190618.

It is an arithmetic number, because the mean of its divisors is an integer number (1326604576).

Almost surely, 2^9628581525 is an apocalyptic number.

It is an amenable number.

9628581525 is a deficient number, since it is larger than the sum of its proper divisors (6290673387).

9628581525 is a wasteful number, since it uses less digits than its factorization.

9628581525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128381100 (or 128381095 counting only the distinct ones).

The product of its digits is 1728000, while the sum is 51.

The square root of 9628581525 is about 98125.3357956038. The cubic root of 9628581525 is about 2127.4242432415.

The spelling of 9628581525 in words is "nine billion, six hundred twenty-eight million, five hundred eighty-one thousand, five hundred twenty-five".