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25025022980 = 22512143103043
BaseRepresentation
bin10111010011100110…
…111000110000000100
32101121000222212212222
4113103212320300010
5402222401213410
615255113031512
71544100120446
oct272346706004
971530885788
1025025022980
11a681a78181
124a249b5598
13248a788009
1412d581c496
159b6eb6955
hex5d39b8c04

25025022980 has 24 divisors (see below), whose sum is σ = 52557386112. Its totient is φ = 10009087712.

The previous prime is 25025022947. The next prime is 25025023021. The reversal of 25025022980 is 8922052052.

It is a self number, because there is not a number n which added to its sum of digits gives 25025022980.

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, 191339 + ... + 294381.

It is an arithmetic number, because the mean of its divisors is an integer number (2189891088).

Almost surely, 225025022980 is an apocalyptic number.

25025022980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25025022980 is an abundant number, since it is smaller than the sum of its proper divisors (27532363132).

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

25025022980 is a wasteful number, since it uses less digits than its factorization.

25025022980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115195 (or 115193 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 25025022980 in words is "twenty-five billion, twenty-five million, twenty-two thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 12143 24286 48572 60715 103043 121430 206086 242860 412172 515215 1030430 2060860 1251251149 2502502298 5005004596 6256255745 12512511490 25025022980