9771225 has 24 divisors (see below), whose sum is σ = 17007840. Its totient is φ = 4936320.

The previous prime is 9771217. The next prime is 9771227. The reversal of 9771225 is 5221779.

It is not a de Polignac number, because 9771225 - 2³ = 9771217 is a prime.

It is a d-powerful number, because it can be written as 9³ + 7⁴ + 7⁴ + 1 + 2² + 2⁶ + 5¹⁰ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9771227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2004 + ... + 4853.

It is an arithmetic number, because the mean of its divisors is an integer number (708660).

Almost surely, 2^9771225 is an apocalyptic number.

9771225 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9771225 is a deficient number, since it is larger than the sum of its proper divisors (7236615).

9771225 is a wasteful number, since it uses less digits than its factorization.

9771225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6889 (or 6884 counting only the distinct ones).

The product of its digits is 8820, while the sum is 33.

The square root of 9771225 is about 3125.8958715863. The cubic root of 9771225 is about 213.7878425527.

The spelling of 9771225 in words is "nine million, seven hundred seventy-one thousand, two hundred twenty-five".