8649920932225 has 12 divisors (see below), whose sum is σ = 10928277466236. Its totient is φ = 6789371900480.

The previous prime is 8649920932157. The next prime is 8649920932249. The reversal of 8649920932225 is 5222390299468.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 26207400769 + 8623713531456 = 161887^2 + 2936616^2 .

It is not a de Polignac number, because 8649920932225 - 2¹³ = 8649920924033 is a prime.

It is a super-2 number, since 2×8649920932225² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3264119782 + ... + 3264122431.

It is an arithmetic number, because the mean of its divisors is an integer number (910689788853).

Almost surely, 2^{8649920932225} is an apocalyptic number.

It is an amenable number.

8649920932225 is a deficient number, since it is larger than the sum of its proper divisors (2278356534011).

8649920932225 is a wasteful number, since it uses less digits than its factorization.

8649920932225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6528242276 (or 6528242271 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 61.

The spelling of 8649920932225 in words is "eight trillion, six hundred forty-nine billion, nine hundred twenty million, nine hundred thirty-two thousand, two hundred twenty-five".