| Base | Representation |
|---|---|
| bin | 110110110111001110… |
| … | …0101011110000101001 |
| 3 | 102021002212201022211100 |
| 4 | 1231232130223300221 |
| 5 | 3412242141130100 |
| 6 | 130042513552013 |
| 7 | 11340422040000 |
| oct | 1555634536051 |
| 9 | 367085638740 |
| 10 | 117817130025 |
| 11 | 45a69775651 |
| 12 | 1aa00875609 |
| 13 | b157ba2a2a |
| 14 | 59b9487c37 |
| 15 | 30e851e400 |
| hex | 1b6e72bc29 |
117817130025 has 135 divisors (see below), whose sum is σ = 246707797271. Its totient is φ = 53743929120.
The previous prime is 117817130023. The next prime is 117817130059. The reversal of 117817130025 is 520031718711.
The square root of 117817130025 is 343245.
It is a perfect power (a square), and thus also a powerful number.
It can be written as a sum of positive squares in only one way, i.e., 42414166809 + 75402963216 = 205947^2 + 274596^2 .
It is not a de Polignac number, because 117817130025 - 21 = 117817130023 is a prime.
It is a super-2 number, since 2×1178171300252 (a number of 23 digits) contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (117817130023) by changing a digit.
It is a polite number, since it can be written in 134 ways as a sum of consecutive naturals, for example, 252284842 + ... + 252285308.
Almost surely, 2117817130025 is an apocalyptic number.
117817130025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
117817130025 is the 343245-th square number.
117817130025 is the 171623-rd centered octagonal number.
It is an amenable number.
117817130025 is an abundant number, since it is smaller than the sum of its proper divisors (128890667246).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
117817130025 is an frugal number, since it uses more digits than its factorization.
117817130025 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 978 (or 482 counting only the distinct ones).
The product of its (nonzero) digits is 11760, while the sum is 36.
Multiplying 117817130025 by its sum of digits (36), we get a square (4241416680900 = 20594702).
Adding to 117817130025 its reverse (520031718711), we get a palindrome (637848848736).
The spelling of 117817130025 in words is "one hundred seventeen billion, eight hundred seventeen million, one hundred thirty thousand, twenty-five".
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