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2020000025 = 52431187471
BaseRepresentation
bin111100001100110…
…1100000100011001
312012202222122002202
41320121230010121
513114110000100
6532235335545
7101025500621
oct17031540431
95182878082
102020000025
11947267a0a
124845b15b5
1326265a7b4
141523c3881
15bc5137d5
hex7866c119

2020000025 has 12 divisors (see below), whose sum is σ = 2510625024. Its totient is φ = 1612242000.

The previous prime is 2019999911. The next prime is 2020000039. The reversal of 2020000025 is 5200000202.

It is not a de Polignac number, because 2020000025 - 220 = 2018951449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2019999970 and 2020000015.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82961 + ... + 104510.

It is an arithmetic number, because the mean of its divisors is an integer number (209218752).

Almost surely, 22020000025 is an apocalyptic number.

2020000025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2020000025 is a deficient number, since it is larger than the sum of its proper divisors (490624999).

2020000025 is a wasteful number, since it uses less digits than its factorization.

2020000025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187912 (or 187907 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2020000025 is about 44944.4103866098. The cubic root of 2020000025 is about 1264.1068700782.

Adding to 2020000025 its reverse (5200000202), we get a palindrome (7220000227).

The spelling of 2020000025 in words is "two billion, twenty million, twenty-five", and thus it is an aban number and an uban number.

Divisors: 1 5 25 431 2155 10775 187471 937355 4686775 80800001 404000005 2020000025