Search a number
-
+
80800008025 = 52117319720431
BaseRepresentation
bin100101101000000001…
…1100100011101011001
321201120002110200200211
41023100003210131121
52310434300224100
6101041412331121
75560204510342
oct1132003443531
9251502420624
1080800008025
11312a3552a40
12137ab913aa1
137808abb549
143ca71070c9
15217d8481ba
hex12d00e4759

80800008025 has 48 divisors (see below), whose sum is σ = 111365515008. Its totient is φ = 57661632000.

The previous prime is 80800008011. The next prime is 80800008031. The reversal of 80800008025 is 52080000808.

It is not a de Polignac number, because 80800008025 - 217 = 80799876953 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3944560 + ... + 3964990.

It is an arithmetic number, because the mean of its divisors is an integer number (2320114896).

Almost surely, 280800008025 is an apocalyptic number.

It is an amenable number.

80800008025 is a deficient number, since it is larger than the sum of its proper divisors (30565506983).

80800008025 is a wasteful number, since it uses less digits than its factorization.

80800008025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20722 (or 20717 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The spelling of 80800008025 in words is "eighty billion, eight hundred million, eight thousand, twenty-five".

Divisors: 1 5 11 25 55 73 197 275 365 803 985 1825 2167 4015 4925 10835 14381 20075 20431 54175 71905 102155 158191 224741 359525 510775 790955 1123705 1491463 3954775 4024907 5618525 7457315 16406093 20124535 37286575 44273977 82030465 100622675 221369885 293818211 410152325 1106849425 1469091055 3232000321 7345455275 16160001605 80800008025