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6250005 = 325138889
BaseRepresentation
bin10111110101111000010101
3102202112101200
4113311320111
53100000010
6341543113
7104060406
oct27657025
912675350
106250005
1135897a3
122114a99
1313aaa38
14b899ad
15836cc0
hex5f5e15

6250005 has 12 divisors (see below), whose sum is σ = 10833420. Its totient is φ = 3333312.

The previous prime is 6249989. The next prime is 6250009. The reversal of 6250005 is 5000526.

6250005 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 675684 + 5574321 = 822^2 + 2361^2 .

It is not a de Polignac number, because 6250005 - 24 = 6249989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6250005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6250009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69400 + ... + 69489.

It is an arithmetic number, because the mean of its divisors is an integer number (902785).

Almost surely, 26250005 is an apocalyptic number.

It is an amenable number.

6250005 is a deficient number, since it is larger than the sum of its proper divisors (4583415).

6250005 is a wasteful number, since it uses less digits than its factorization.

6250005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138900 (or 138897 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 6250005 is about 2500.0009999998. Note that the first 3 decimals coincide. The cubic root of 6250005 is about 184.2016240524.

The spelling of 6250005 in words is "six million, two hundred fifty thousand, five".

Divisors: 1 3 5 9 15 45 138889 416667 694445 1250001 2083335 6250005