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51512410025 = 5219108447179
BaseRepresentation
bin101111111110011000…
…001111111110101001
311220221222200120010222
4233332120033332221
51320444134110100
635355305415425
73502345155266
oct577630177651
9156858616128
1051512410025
111a93445a09a
129b9749a575
134b1c1b87bb
1426c954426d
151517541485
hexbfe60ffa9

51512410025 has 12 divisors (see below), whose sum is σ = 67237251600. Its totient is φ = 39040984080.

The previous prime is 51512410009. The next prime is 51512410067. The reversal of 51512410025 is 52001421515.

It is not a de Polignac number, because 51512410025 - 24 = 51512410009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51512409976 and 51512410003.

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, 54223115 + ... + 54224064.

It is an arithmetic number, because the mean of its divisors is an integer number (5603104300).

Almost surely, 251512410025 is an apocalyptic number.

It is an amenable number.

51512410025 is a deficient number, since it is larger than the sum of its proper divisors (15724841575).

51512410025 is a wasteful number, since it uses less digits than its factorization.

51512410025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108447208 (or 108447203 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 51512410025 in words is "fifty-one billion, five hundred twelve million, four hundred ten thousand, twenty-five".

Divisors: 1 5 19 25 95 475 108447179 542235895 2060496401 2711179475 10302482005 51512410025