9821223625 has 16 divisors (see below), whose sum is σ = 12302493840. Its totient is φ = 7827744000.

The previous prime is 9821223613. The next prime is 9821223691. The reversal of 9821223625 is 5263221289.

It can be written as a sum of positive squares in 8 ways, for example, as 8313610041 + 1507613584 = 91179^2 + 38828^2 .

It is not a de Polignac number, because 9821223625 - 2⁵ = 9821223593 is a prime.

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, 112416 + ... + 179665.

It is an arithmetic number, because the mean of its divisors is an integer number (768905865).

Almost surely, 2^9821223625 is an apocalyptic number.

It is an amenable number.

9821223625 is a deficient number, since it is larger than the sum of its proper divisors (2481270215).

9821223625 is a wasteful number, since it uses less digits than its factorization.

9821223625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292365 (or 292355 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 9821223625 is about 99102.0868851913. The cubic root of 9821223625 is about 2141.5186780882.

The spelling of 9821223625 in words is "nine billion, eight hundred twenty-one million, two hundred twenty-three thousand, six hundred twenty-five".