9222721225 has 9 divisors (see below), whose sum is σ = 11436769767. Its totient is φ = 7377792840.

The previous prime is 9222721213. The next prime is 9222721327. The reversal of 9222721225 is 5221272229.

The square root of 9222721225 is 96035.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3320179641 + 5902541584 = 57621^2 + 76828^2 .

It is not a de Polignac number, because 9222721225 - 2⁹ = 9222720713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 470572 + ... + 489778.

Almost surely, 2^9222721225 is an apocalyptic number.

9222721225 is the 96035-th square number.

9222721225 is the 48018-th centered octagonal number.

It is an amenable number.

9222721225 is a deficient number, since it is larger than the sum of its proper divisors (2214048542).

9222721225 is an frugal number, since it uses more digits than its factorization.

9222721225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38424 (or 19212 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The cubic root of 9222721225 is about 2097.1026730120.

The spelling of 9222721225 in words is "nine billion, two hundred twenty-two million, seven hundred twenty-one thousand, two hundred twenty-five".