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2110557025 = 5284422281
BaseRepresentation
bin111110111001100…
…1000101101100001
312110002101101221201
41331303020231201
513310300311100
6545232321201
7103205303323
oct17563105541
95402341851
102110557025
11993399805
124aa9a3201
13278346115
14160437613
15c545036a
hex7dcc8b61

2110557025 has 6 divisors (see below), whose sum is σ = 2617090742. Its totient is φ = 1688445600.

The previous prime is 2110557023. The next prime is 2110557077. The reversal of 2110557025 is 5207550112.

It can be written as a sum of positive squares in 3 ways, for example, as 81595089 + 2028961936 = 9033^2 + 45044^2 .

It is not a de Polignac number, because 2110557025 - 21 = 2110557023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110556984 and 2110557002.

It is not an unprimeable number, because it can be changed into a prime (2110557023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42211116 + ... + 42211165.

Almost surely, 22110557025 is an apocalyptic number.

2110557025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2110557025 is a deficient number, since it is larger than the sum of its proper divisors (506533717).

2110557025 is an equidigital number, since it uses as much as digits as its factorization.

2110557025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84422291 (or 84422286 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 2110557025 is about 45940.7991332323. The cubic root of 2110557025 is about 1282.7214689724.

The spelling of 2110557025 in words is "two billion, one hundred ten million, five hundred fifty-seven thousand, twenty-five".

Divisors: 1 5 25 84422281 422111405 2110557025