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25641030241 = 711792017549
BaseRepresentation
bin10111111000010100…
…110001001001100001
32110011222010021222201
4113320110301021201
5410003100431431
615440200133201
71565260106131
oct277024611141
973158107881
1025641030241
11a968769592
124b77167201
132558299858
141353570ac1
15a010e7461
hex5f8531261

25641030241 has 8 divisors (see below), whose sum is σ = 26147448000. Its totient is φ = 25138648080.

The previous prime is 25641030209. The next prime is 25641030257. The reversal of 25641030241 is 14203014652.

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

It is a cyclic number.

It is not a de Polignac number, because 25641030241 - 25 = 25641030209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25641037241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996066 + ... + 1021483.

It is an arithmetic number, because the mean of its divisors is an integer number (3268431000).

Almost surely, 225641030241 is an apocalyptic number.

It is an amenable number.

25641030241 is a deficient number, since it is larger than the sum of its proper divisors (506417759).

25641030241 is a wasteful number, since it uses less digits than its factorization.

25641030241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017799.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 25641030241 its reverse (14203014652), we get a palindrome (39844044893).

The spelling of 25641030241 in words is "twenty-five billion, six hundred forty-one million, thirty thousand, two hundred forty-one".

Divisors: 1 71 179 12709 2017549 143245979 361141271 25641030241