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25080807481 = 192263264167
BaseRepresentation
bin10111010110111011…
…101100000000111001
32101201220222000211121
4113112323230000321
5402331141314411
615304424425241
71545345226462
oct272673540071
971656860747
1025080807481
11a700509974
124a3b618221
1324991ba2b2
1412dcdbdd69
159bbd35571
hex5d6eec039

25080807481 has 12 divisors (see below), whose sum is σ = 26571074112. Its totient is φ = 23670330264.

The previous prime is 25080807431. The next prime is 25080807487. The reversal of 25080807481 is 18470808052.

It is not a de Polignac number, because 25080807481 - 211 = 25080805433 is a prime.

It is a super-2 number, since 2×250808074812 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25080807487) 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 11 ways as a sum of consecutive naturals, for example, 37141 + ... + 227026.

It is an arithmetic number, because the mean of its divisors is an integer number (2214256176).

Almost surely, 225080807481 is an apocalyptic number.

It is an amenable number.

25080807481 is a deficient number, since it is larger than the sum of its proper divisors (1490266631).

25080807481 is a wasteful number, since it uses less digits than its factorization.

25080807481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264468 (or 264449 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 43.

The spelling of 25080807481 in words is "twenty-five billion, eighty million, eight hundred seven thousand, four hundred eighty-one".

Divisors: 1 19 263 361 4997 94943 264167 5019173 69475921 95364287 1320042499 25080807481