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2111350025 = 52409206489
BaseRepresentation
bin111110111011000…
…1010010100001001
312110010212200202002
41331312022110021
513311001200100
6545301320345
7103215115301
oct17566122411
95403780662
102111350025
11993890584
124ab1060b5
13278563055
141605a2601
15c555a2d5
hex7dd8a509

2111350025 has 12 divisors (see below), whose sum is σ = 2624487900. Its totient is φ = 1684942080.

The previous prime is 2111349997. The next prime is 2111350039. The reversal of 2111350025 is 5200531112.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 173501584 + 1937848441 = 13172^2 + 44021^2 .

It is not a de Polignac number, because 2111350025 - 28 = 2111349769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2111349979 and 2111350006.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93020 + ... + 113469.

It is an arithmetic number, because the mean of its divisors is an integer number (218707325).

Almost surely, 22111350025 is an apocalyptic number.

2111350025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2111350025 is a deficient number, since it is larger than the sum of its proper divisors (513137875).

2111350025 is a wasteful number, since it uses less digits than its factorization.

2111350025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206908 (or 206903 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 2111350025 is about 45949.4289953640. The cubic root of 2111350025 is about 1282.8821012513.

Adding to 2111350025 its reverse (5200531112), we get a palindrome (7311881137).

The spelling of 2111350025 in words is "two billion, one hundred eleven million, three hundred fifty thousand, twenty-five".

Divisors: 1 5 25 409 2045 10225 206489 1032445 5162225 84454001 422270005 2111350025