6172811117225 has 6 divisors (see below), whose sum is σ = 7654285785390. Its totient is φ = 4938248893760.

The previous prime is 6172811117149. The next prime is 6172811117267. The reversal of 6172811117225 is 5227111182716.

It can be written as a sum of positive squares in 3 ways, for example, as 7601572969 + 6165209544256 = 87187^2 + 2482984^2 .

It is not a de Polignac number, because 6172811117225 - 2²² = 6172806922921 is a prime.

It is a super-4 number, since 4×6172811117225⁴ (a number of 52 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123456222320 + ... + 123456222369.

It is an arithmetic number, because the mean of its divisors is an integer number (1275714297565).

Almost surely, 2^{6172811117225} is an apocalyptic number.

It is an amenable number.

6172811117225 is a deficient number, since it is larger than the sum of its proper divisors (1481474668165).

6172811117225 is a wasteful number, since it uses less digits than its factorization.

6172811117225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246912444699 (or 246912444694 counting only the distinct ones).

The product of its digits is 94080, while the sum is 44.

The spelling of 6172811117225 in words is "six trillion, one hundred seventy-two billion, eight hundred eleven million, one hundred seventeen thousand, two hundred twenty-five".