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2072801125 = 5341404449
BaseRepresentation
bin111101110001100…
…0110111101100101
312100110100012121001
41323203012331211
513221114114000
6541403153301
7102236342653
oct17343067545
95313305531
102072801125
1197405118a
1249a215831
13270586b55
14159409dd3
15c1e9346a
hex7b8c6f65

2072801125 has 16 divisors (see below), whose sum is σ = 2649956400. Its totient is φ = 1617792000.

The previous prime is 2072801123. The next prime is 2072801173. The reversal of 2072801125 is 5211082702.

It can be written as a sum of positive squares in 8 ways, for example, as 1743814081 + 328987044 = 41759^2 + 18138^2 .

It is not a de Polignac number, because 2072801125 - 21 = 2072801123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2072801093 and 2072801102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2072801123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197100 + ... + 207349.

It is an arithmetic number, because the mean of its divisors is an integer number (165622275).

Almost surely, 22072801125 is an apocalyptic number.

2072801125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2072801125 is a deficient number, since it is larger than the sum of its proper divisors (577155275).

2072801125 is an equidigital number, since it uses as much as digits as its factorization.

2072801125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404505 (or 404495 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 2072801125 is about 45528.0257094463. The cubic root of 2072801125 is about 1275.0265020763.

Adding to 2072801125 its reverse (5211082702), we get a palindrome (7283883827).

The spelling of 2072801125 in words is "two billion, seventy-two million, eight hundred one thousand, one hundred twenty-five".

Divisors: 1 5 25 41 125 205 1025 5125 404449 2022245 10111225 16582409 50556125 82912045 414560225 2072801125