8729890225 has 48 divisors (see below), whose sum is σ = 12672403200. Its totient is φ = 5963260800.

The previous prime is 8729890193. The next prime is 8729890241. The reversal of 8729890225 is 5220989278.

It is a happy number.

It is not a de Polignac number, because 8729890225 - 2⁵ = 8729890193 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2407764 + ... + 2411386.

It is an arithmetic number, because the mean of its divisors is an integer number (264008400).

Almost surely, 2^8729890225 is an apocalyptic number.

It is an amenable number.

8729890225 is a deficient number, since it is larger than the sum of its proper divisors (3942512975).

8729890225 is a wasteful number, since it uses less digits than its factorization.

8729890225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3935 (or 3916 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 52.

The square root of 8729890225 is about 93433.8815687329. The cubic root of 8729890225 is about 2059.0628081309.

The spelling of 8729890225 in words is "eight billion, seven hundred twenty-nine million, eight hundred ninety thousand, two hundred twenty-five".