9725718850 has 12 divisors (see below), whose sum is σ = 18089837154. Its totient is φ = 3890287520.

The previous prime is 9725718839. The next prime is 9725718851. The reversal of 9725718850 is 588175279.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5029220889 + 4696497961 = 70917^2 + 68531^2 .

It is not an unprimeable number, because it can be changed into a prime (9725718851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97257139 + ... + 97257238.

Almost surely, 2^9725718850 is an apocalyptic number.

9725718850 is a deficient number, since it is larger than the sum of its proper divisors (8364118304).

9725718850 is a wasteful number, since it uses less digits than its factorization.

9725718850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194514389 (or 194514384 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 52.

The square root of 9725718850 is about 98619.0592634101. The cubic root of 9725718850 is about 2134.5544467113.

The spelling of 9725718850 in words is "nine billion, seven hundred twenty-five million, seven hundred eighteen thousand, eight hundred fifty".