9725805241 has 4 divisors (see below), whose sum is σ = 9728292132. Its totient is φ = 9723318352.

The previous prime is 9725805233. The next prime is 9725805251. The reversal of 9725805241 is 1425085279.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5432279616 + 4293525625 = 73704^2 + 65525^2 .

It is a cyclic number.

It is not a de Polignac number, because 9725805241 - 2³ = 9725805233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9725805251) 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, 1237570 + ... + 1245403.

It is an arithmetic number, because the mean of its divisors is an integer number (2432073033).

Almost surely, 2^9725805241 is an apocalyptic number.

It is an amenable number.

9725805241 is a deficient number, since it is larger than the sum of its proper divisors (2486891).

9725805241 is a wasteful number, since it uses less digits than its factorization.

9725805241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486890.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 9725805241 is about 98619.4972660072. The cubic root of 9725805241 is about 2134.5607669210.

The spelling of 9725805241 in words is "nine billion, seven hundred twenty-five million, eight hundred five thousand, two hundred forty-one".