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25230212224 = 277257109567
BaseRepresentation
bin10111011111110101…
…100111110010000000
32102010100002120121121
4113133311213302000
5403132413242344
615331323002024
71552141160020
oct273765476200
972110076547
1025230212224
11a777884968
124a81669314
1324c113b279
141314b91a80
159c9ee8684
hex5dfd67c80

25230212224 has 64 divisors (see below), whose sum is σ = 57667829760. Its totient is φ = 10770776064.

The previous prime is 25230212209. The next prime is 25230212243. The reversal of 25230212224 is 42221203252.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175489 + ... + 285055.

It is an arithmetic number, because the mean of its divisors is an integer number (901059840).

Almost surely, 225230212224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25230212224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28833914880).

25230212224 is an abundant number, since it is smaller than the sum of its proper divisors (32437617536).

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

25230212224 is a wasteful number, since it uses less digits than its factorization.

25230212224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109845 (or 109833 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 25230212224 its reverse (42221203252), we get a palindrome (67451415476).

The spelling of 25230212224 in words is "twenty-five billion, two hundred thirty million, two hundred twelve thousand, two hundred twenty-four".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 257 448 514 896 1028 1799 2056 3598 4112 7196 8224 14392 16448 28784 32896 57568 109567 115136 219134 230272 438268 766969 876536 1533938 1753072 3067876 3506144 6135752 7012288 12271504 14024576 24543008 28158719 49086016 56317438 98172032 112634876 197111033 225269752 394222066 450539504 788444132 901079008 1576888264 1802158016 3153776528 3604316032 6307553056 12615106112 25230212224