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8000025 = 352119697
BaseRepresentation
bin11110100001001000011001
3120001102222020
4132201020121
54022000100
6443245053
7124666455
oct36411031
916042866
108000025
1145745a0
122819789
131871457
1410c3665
15a805a0
hex7a1219

8000025 has 24 divisors (see below), whose sum is σ = 14430624. Its totient is φ = 3878400.

The previous prime is 8000023. The next prime is 8000033. The reversal of 8000025 is 5200008.

It is not a de Polignac number, because 8000025 - 21 = 8000023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

8000025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7999968 and 8000013.

It is not an unprimeable number, because it can be changed into a prime (8000023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4024 + ... + 5673.

It is an arithmetic number, because the mean of its divisors is an integer number (601276).

Almost surely, 28000025 is an apocalyptic number.

It is an amenable number.

8000025 is a deficient number, since it is larger than the sum of its proper divisors (6430599).

8000025 is a wasteful number, since it uses less digits than its factorization.

8000025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9721 (or 9716 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 8000025 is about 2828.4315441601. The cubic root of 8000025 is about 200.0002083331. Note that the first 3 decimals are identical.

8000025 divided by its sum of digits (15) gives a palindrome (533335).

The spelling of 8000025 in words is "eight million, twenty-five", and thus it is an aban number and an uban number.

Divisors: 1 3 5 11 15 25 33 55 75 165 275 825 9697 29091 48485 106667 145455 242425 320001 533335 727275 1600005 2666675 8000025