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12530289025 = 5217231281871
BaseRepresentation
bin10111010101101110…
…10000100110000001
31012100020221122010201
423222313100212001
5201130223222100
65431211325201
7622340461612
oct135267204601
935306848121
1012530289025
115350026671
122518450801
131248c93307
1486c219c09
154d50bd36a
hex2eadd0981

12530289025 has 24 divisors (see below), whose sum is σ = 17166829824. Its totient is φ = 9024364800.

The previous prime is 12530289017. The next prime is 12530289029. The reversal of 12530289025 is 52098203521.

It is not a de Polignac number, because 12530289025 - 23 = 12530289017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12530289029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 631161 + ... + 650710.

It is an arithmetic number, because the mean of its divisors is an integer number (715284576).

Almost surely, 212530289025 is an apocalyptic number.

It is an amenable number.

12530289025 is a deficient number, since it is larger than the sum of its proper divisors (4636540799).

12530289025 is a wasteful number, since it uses less digits than its factorization.

12530289025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281921 (or 1281916 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 12530289025 in words is "twelve billion, five hundred thirty million, two hundred eighty-nine thousand, twenty-five".

Divisors: 1 5 17 23 25 85 115 391 425 575 1955 9775 1281871 6409355 21791807 29483033 32046775 108959035 147415165 501211561 544795175 737075825 2506057805 12530289025