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3120505025 = 52117122251
BaseRepresentation
bin1011100111111111…
…0010000011000001
322001110210002011012
42321333302003001
522342322130100
61233351130305
7140220566201
oct27177620301
98043702135
103120505025
111361497680
12731073995
133a96572a1
14218614401
15133e49135
hexb9ff20c1

3120505025 has 36 divisors (see below), whose sum is σ = 4283385072. Its totient is φ = 2236500000.

The previous prime is 3120505007. The next prime is 3120505079. The reversal of 3120505025 is 5205050213.

It is not a de Polignac number, because 3120505025 - 214 = 3120488641 is a prime.

It is a super-2 number, since 2×31205050252 = 19475103222100501250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 1385150 + ... + 1387400.

Almost surely, 23120505025 is an apocalyptic number.

It is an amenable number.

3120505025 is a deficient number, since it is larger than the sum of its proper divisors (1162880047).

3120505025 is a wasteful number, since it uses less digits than its factorization.

3120505025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414 (or 2338 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 23.

The square root of 3120505025 is about 55861.4806910809. The cubic root of 3120505025 is about 1461.3075521222.

Adding to 3120505025 its reverse (5205050213), we get a palindrome (8325555238).

The spelling of 3120505025 in words is "three billion, one hundred twenty million, five hundred five thousand, twenty-five".

Divisors: 1 5 11 25 55 71 275 355 781 1775 2251 3905 5041 11255 19525 24761 25205 55451 56275 123805 126025 159821 277255 619025 799105 1386275 1758031 3995525 8790155 11347291 43950775 56736455 124820201 283682275 624101005 3120505025