8978117222225 has 12 divisors (see below), whose sum is σ = 11243091748380. Its totient is φ = 7111379976000.

The previous prime is 8978117222171. The next prime is 8978117222233. The reversal of 8978117222225 is 5222227118798.

8978117222225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 107631893329 + 8870485328896 = 328073^2 + 2978336^2 .

It is not a de Polignac number, because 8978117222225 - 2³⁶ = 8909397745489 is a prime.

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, 1777842470 + ... + 1777847519.

It is an arithmetic number, because the mean of its divisors is an integer number (936924312365).

Almost surely, 2^{8978117222225} is an apocalyptic number.

It is an amenable number.

8978117222225 is a deficient number, since it is larger than the sum of its proper divisors (2264974526155).

8978117222225 is a wasteful number, since it uses less digits than its factorization.

8978117222225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555690100 (or 3555690095 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 56.

The spelling of 8978117222225 in words is "eight trillion, nine hundred seventy-eight billion, one hundred seventeen million, two hundred twenty-two thousand, two hundred twenty-five".