9725505 has 16 divisors (see below), whose sum is σ = 15603840. Its totient is φ = 5172608.

The previous prime is 9725491. The next prime is 9725531. The reversal of 9725505 is 5055279.

It is a cyclic number.

It is not a de Polignac number, because 9725505 - 2⁴ = 9725489 is a prime.

It is an Ulam number.

9725505 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6901 + ... + 8189.

It is an arithmetic number, because the mean of its divisors is an integer number (975240).

Almost surely, 2^9725505 is an apocalyptic number.

It is an amenable number.

9725505 is a deficient number, since it is larger than the sum of its proper divisors (5878335).

9725505 is a wasteful number, since it uses less digits than its factorization.

9725505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 9725505 is about 3118.5741934416. The cubic root of 9725505 is about 213.4538801670.

The spelling of 9725505 in words is "nine million, seven hundred twenty-five thousand, five hundred five".