9625641247 has 4 divisors (see below), whose sum is σ = 10191855456. Its totient is φ = 9059427040.

The previous prime is 9625641209. The next prime is 9625641287. The reversal of 9625641247 is 7421465269.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9625641247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9625641197 and 9625641206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9625641287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283107079 + ... + 283107112.

It is an arithmetic number, because the mean of its divisors is an integer number (2547963864).

Almost surely, 2^9625641247 is an apocalyptic number.

9625641247 is a deficient number, since it is larger than the sum of its proper divisors (566214209).

9625641247 is a wasteful number, since it uses less digits than its factorization.

9625641247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566214208.

The product of its digits is 725760, while the sum is 46.

The square root of 9625641247 is about 98110.3523946377. The cubic root of 9625641247 is about 2127.2076708243.

The spelling of 9625641247 in words is "nine billion, six hundred twenty-five million, six hundred forty-one thousand, two hundred forty-seven".