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25280050027 = 29907961109
BaseRepresentation
bin10111100010110011…
…101111001101101011
32102020210212121020011
4113202303233031223
5403233143100102
615340303112351
71553314610521
oct274263571553
972223777204
1025280050027
11a7a2a24831
124a962a26b7
1324cb56a8ab
14131b646311
159ce5902d7
hex5e2cef36b

25280050027 has 8 divisors (see below), whose sum is σ = 26180636400. Its totient is φ = 24381387744.

The previous prime is 25280050021. The next prime is 25280050043. The reversal of 25280050027 is 72005008252.

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-25280050027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25280050021) 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, 454252 + ... + 506857.

It is an arithmetic number, because the mean of its divisors is an integer number (3272579550).

Almost surely, 225280050027 is an apocalyptic number.

25280050027 is a deficient number, since it is larger than the sum of its proper divisors (900586373).

25280050027 is an equidigital number, since it uses as much as digits as its factorization.

25280050027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962045.

The product of its (nonzero) digits is 11200, while the sum is 31.

Adding to 25280050027 its reverse (72005008252), we get a palindrome (97285058279).

The spelling of 25280050027 in words is "twenty-five billion, two hundred eighty million, fifty thousand, twenty-seven".

Divisors: 1 29 907 26303 961109 27872161 871725863 25280050027