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20252100000 = 253551117192
BaseRepresentation
bin10010110111000111…
…101000010110100000
31221021101220021102210
4102313013220112200
5312434014200000
613145332442120
71314603003216
oct226707502640
957241807383
1020252100000
118652867530
123b12479340
131ba99a4132
14da198acb6
157d7e67350
hex4b71e85a0

20252100000 has 864 divisors, whose sum is σ = 81004940352. Its totient is φ = 4377600000.

The previous prime is 20252099999. The next prime is 20252100007. The reversal of 20252100000 is 125202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20252100007) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1065899991 + ... + 1065900009.

It is an arithmetic number, because the mean of its divisors is an integer number (93755718).

Almost surely, 220252100000 is an apocalyptic number.

20252100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20252100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40502470176).

20252100000 is an abundant number, since it is smaller than the sum of its proper divisors (60752840352).

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

20252100000 is a wasteful number, since it uses less digits than its factorization.

20252100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

Adding to 20252100000 its reverse (125202), we get a palindrome (20252225202).

The spelling of 20252100000 in words is "twenty billion, two hundred fifty-two million, one hundred thousand".