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25705032875 = 53231312521
BaseRepresentation
bin10111111100001000…
…111010110010101011
32110100102112222002122
4113330020322302223
5410120442023000
615450404021455
71566665113544
oct277410726253
973312488078
1025705032875
11a9a0903725
124b9469188b
132568618632
14135bc714cb
15a06a3b085
hex5fc23acab

25705032875 has 48 divisors (see below), whose sum is σ = 33796885824. Its totient is φ = 19482320000.

The previous prime is 25705032863. The next prime is 25705032919. The reversal of 25705032875 is 57823050752.

It is not a de Polignac number, because 25705032875 - 26 = 25705032811 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 49337615 + ... + 49338135.

It is an arithmetic number, because the mean of its divisors is an integer number (704101788).

Almost surely, 225705032875 is an apocalyptic number.

25705032875 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

25705032875 is a deficient number, since it is larger than the sum of its proper divisors (8091852949).

25705032875 is an equidigital number, since it uses as much as digits as its factorization.

25705032875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 680 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 25705032875 in words is "twenty-five billion, seven hundred five million, thirty-two thousand, eight hundred seventy-five".

Divisors: 1 5 23 25 115 125 131 521 575 655 2605 2875 3013 3275 11983 13025 15065 16375 17161 59915 65125 68251 75325 85805 299575 341255 376625 394703 429025 1497875 1569773 1706275 1973515 2145125 7848865 8531375 8940881 9867575 39244325 44704405 49337875 196221625 205640263 223522025 1028201315 1117610125 5141006575 25705032875