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2087211125 = 5317982217
BaseRepresentation
bin111110001101000…
…0101000001110101
312101110110022101202
41330122011001311
513233311224000
6543040102245
7102503000426
oct17432050165
95343408352
102087211125
119811a367a
124a3004985
13273560a8c
1415b2bb64d
15c338cdd5
hex7c685075

2087211125 has 16 divisors (see below), whose sum is σ = 2758068144. Its totient is φ = 1571545600.

The previous prime is 2087211089. The next prime is 2087211143. The reversal of 2087211125 is 5211127802.

It can be written as a sum of positive squares in 8 ways, for example, as 34939921 + 2052271204 = 5911^2 + 45302^2 .

It is not a de Polignac number, because 2087211125 - 216 = 2087145589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 488984 + ... + 493233.

It is an arithmetic number, because the mean of its divisors is an integer number (172379259).

Almost surely, 22087211125 is an apocalyptic number.

2087211125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2087211125 is a deficient number, since it is larger than the sum of its proper divisors (670857019).

2087211125 is an equidigital number, since it uses as much as digits as its factorization.

2087211125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982249 (or 982239 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 2087211125 is about 45686.0057895194. The cubic root of 2087211125 is about 1277.9743197288.

Adding to 2087211125 its reverse (5211127802), we get a palindrome (7298338927).

The spelling of 2087211125 in words is "two billion, eighty-seven million, two hundred eleven thousand, one hundred twenty-five".

Divisors: 1 5 17 25 85 125 425 2125 982217 4911085 16697689 24555425 83488445 122777125 417442225 2087211125