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25280002006 = 272378509323
BaseRepresentation
bin10111100010110011…
…100011011111010110
32102020210210011100121
4113202303203133112
5403233140031011
615340302102154
71553314320520
oct274263433726
972223704317
1025280002006
11a7a29a1746
124a9627a95a
1324cb551a8c
14131b632a10
159ce580e71
hex5e2ce37d6

25280002006 has 16 divisors (see below), whose sum is σ = 45221370624. Its totient is φ = 10363230504.

The previous prime is 25280001977. The next prime is 25280002081. The reversal of 25280002006 is 60020008252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39254340 + ... + 39254983.

It is an arithmetic number, because the mean of its divisors is an integer number (2826335664).

Almost surely, 225280002006 is an apocalyptic number.

25280002006 is a deficient number, since it is larger than the sum of its proper divisors (19941368618).

25280002006 is a wasteful number, since it uses less digits than its factorization.

25280002006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78509355.

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 25280002006 in words is "twenty-five billion, two hundred eighty million, two thousand, six".

Divisors: 1 2 7 14 23 46 161 322 78509323 157018646 549565261 1099130522 1805714429 3611428858 12640001003 25280002006