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25129540001 = 431026756921
BaseRepresentation
bin10111011001110101…
…100101100110100001
32101212022122220021202
4113121311211212201
5402431130240001
615313325130545
71546506365006
oct273165454641
971768586252
1025129540001
11a725a74385
124a539b9a55
1324a63207c7
1413056678ad
159c125e96b
hex5d9d659a1

25129540001 has 8 divisors (see below), whose sum is σ = 25716904224. Its totient is φ = 24542310240.

The previous prime is 25129539983. The next prime is 25129540021. The reversal of 25129540001 is 10004592152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-25129540001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25129540021) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 413021 + ... + 469941.

It is an arithmetic number, because the mean of its divisors is an integer number (3214613028).

Almost surely, 225129540001 is an apocalyptic number.

It is an amenable number.

25129540001 is a deficient number, since it is larger than the sum of its proper divisors (587364223).

25129540001 is a wasteful number, since it uses less digits than its factorization.

25129540001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67231.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 25129540001 in words is "twenty-five billion, one hundred twenty-nine million, five hundred forty thousand, one".

Divisors: 1 43 10267 56921 441481 2447603 584407907 25129540001