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308130459025 = 5267216572
BaseRepresentation
bin1000111101111100000…
…00011010110110010001
31002110100010211010210011
410132332000122312101
520022022344142100
6353315253034521
731155521454454
oct4367600326621
91073303733704
10308130459025
1110974a67a524
124b874325a41
13230973bb3cc
1410cb0c8949b
158036378bba
hex47be01ad91

308130459025 has 27 divisors (see below), whose sum is σ = 388103817969. Its totient is φ = 242678652480.

The previous prime is 308130458969. The next prime is 308130459041. The reversal of 308130459025 is 520954031803.

The square root of 308130459025 is 555095.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 31929758721 + 276200700304 = 178689^2 + 525548^2 .

It is not a de Polignac number, because 308130459025 - 219 = 308129934737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 185955997 + ... + 185957653.

Almost surely, 2308130459025 is an apocalyptic number.

308130459025 is the 555095-th square number.

308130459025 is the 277548-th centered octagonal number.

It is an amenable number.

308130459025 is a deficient number, since it is larger than the sum of its proper divisors (79973358944).

308130459025 is an frugal number, since it uses more digits than its factorization.

308130459025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458 (or 1729 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 308130459025 in words is "three hundred eight billion, one hundred thirty million, four hundred fifty-nine thousand, twenty-five".

Divisors: 1 5 25 67 335 1657 1675 4489 8285 22445 41425 111019 112225 555095 2745649 2775475 7438273 13728245 37191365 68641225 183958483 185956825 919792415 4598962075 12325218361 61626091805 308130459025