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20120026025 = 521173163731
BaseRepresentation
bin10010101111001111…
…110011101110101001
31220221012101020000002
4102233033303232221
5312201211313100
613124253552345
71311410254001
oct225717635651
956835336002
1020120026025
118595259390
123a961a56b5
131b88510658
14d8c20b001
157cb5792d5
hex4af3f3ba9

20120026025 has 12 divisors (see below), whose sum is σ = 27216908304. Its totient is φ = 14632746000.

The previous prime is 20120026009. The next prime is 20120026033. The reversal of 20120026025 is 52062002102.

It is not a de Polignac number, because 20120026025 - 24 = 20120026009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20120025988 and 20120026006.

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, 36581591 + ... + 36582140.

It is an arithmetic number, because the mean of its divisors is an integer number (2268075692).

Almost surely, 220120026025 is an apocalyptic number.

20120026025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20120026025 is a deficient number, since it is larger than the sum of its proper divisors (7096882279).

20120026025 is a wasteful number, since it uses less digits than its factorization.

20120026025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73163752 (or 73163747 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 20120026025 its reverse (52062002102), we get a palindrome (72182028127).

The spelling of 20120026025 in words is "twenty billion, one hundred twenty million, twenty-six thousand, twenty-five".

Divisors: 1 5 11 25 55 275 73163731 365818655 804801041 1829093275 4024005205 20120026025