9977225 has 12 divisors (see below), whose sum is σ = 12411036. Its totient is φ = 7956480.

The previous prime is 9977213. The next prime is 9977237. The reversal of 9977225 is 5227799.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (9977213) and next prime (9977237).

It can be written as a sum of positive squares in 6 ways, for example, as 292681 + 9684544 = 541^2 + 3112^2 .

It is not a de Polignac number, because 9977225 - 2¹⁰ = 9976201 is a prime.

It is a d-powerful number, because it can be written as 9 + 9² + 7⁴ + 7⁸ + 2² + 2²² + 5⁶ .

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 14489 + ... + 15161.

It is an arithmetic number, because the mean of its divisors is an integer number (1034253).

Almost surely, 2^9977225 is an apocalyptic number.

It is an amenable number.

9977225 is a deficient number, since it is larger than the sum of its proper divisors (2433811).

9977225 is a wasteful number, since it uses less digits than its factorization.

9977225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1276 (or 1271 counting only the distinct ones).

The product of its digits is 79380, while the sum is 41.

The square root of 9977225 is about 3158.6745638005. The cubic root of 9977225 is about 215.2797871782.

The spelling of 9977225 in words is "nine million, nine hundred seventy-seven thousand, two hundred twenty-five".