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20200025 = 521515351
BaseRepresentation
bin100110100001…
…1101001011001
31102000021020002
41031003221121
520132400100
62000542345
7333461126
oct115035131
942007202
1020200025
111044763a
1269219b5
1342534a1
14297b74d
151b902d5
hex1343a59

20200025 has 12 divisors (see below), whose sum is σ = 25218624. Its totient is φ = 16050000.

The previous prime is 20200013. The next prime is 20200027. The reversal of 20200025 is 52000202.

It is not a de Polignac number, because 20200025 - 28 = 20199769 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20199979 and 20200015.

It is not an unprimeable number, because it can be changed into a prime (20200027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1100 + ... + 6450.

It is an arithmetic number, because the mean of its divisors is an integer number (2101552).

Almost surely, 220200025 is an apocalyptic number.

20200025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20200025 is a deficient number, since it is larger than the sum of its proper divisors (5018599).

20200025 is a wasteful number, since it uses less digits than its factorization.

20200025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5512 (or 5507 counting only the distinct ones).

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

The square root of 20200025 is about 4494.4437920615. The cubic root of 20200025 is about 272.3436805098.

Adding to 20200025 its reverse (52000202), we get a palindrome (72200227).

The spelling of 20200025 in words is "twenty million, two hundred thousand, twenty-five".

Divisors: 1 5 25 151 755 3775 5351 26755 133775 808001 4040005 20200025