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25027200212 = 2272127689797
BaseRepresentation
bin10111010011101111…
…001100010011010100
32101121012002111111012
4113103233030103110
5402223430401322
615255231431352
71544124456200
oct272357142324
971535074435
1025027200212
11a683224a43
124a25685558
13248b06b011
1412d5c27b00
159b7296ae2
hex5d3bcc4d4

25027200212 has 18 divisors (see below), whose sum is σ = 50948229402. Its totient is φ = 10725942864.

The previous prime is 25027200179. The next prime is 25027200217. The reversal of 25027200212 is 21200272052.

It can be written as a sum of positive squares in only one way, i.e., 24524812816 + 502387396 = 156604^2 + 22414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25027200217) 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 5 ways as a sum of consecutive naturals, for example, 63844703 + ... + 63845094.

It is an arithmetic number, because the mean of its divisors is an integer number (2830457189).

Almost surely, 225027200212 is an apocalyptic number.

It is an amenable number.

25027200212 is an abundant number, since it is smaller than the sum of its proper divisors (25921029190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25027200212 is a wasteful number, since it uses less digits than its factorization.

25027200212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127689815 (or 127689806 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

Adding to 25027200212 its reverse (21200272052), we get a palindrome (46227472264).

The spelling of 25027200212 in words is "twenty-five billion, twenty-seven million, two hundred thousand, two hundred twelve".

Divisors: 1 2 4 7 14 28 49 98 196 127689797 255379594 510759188 893828579 1787657158 3575314316 6256800053 12513600106 25027200212