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20125211353 = 1343181443449
BaseRepresentation
bin10010101111100011…
…100101101011011001
31220221120010122221021
4102233203211223121
5312204023230403
613125001042441
71311502321402
oct225743455331
956846118837
1020125211353
118598180185
123a97a86421
131b896078b0
14d8cb9a9a9
157cbc508bd
hex4af8e5ad9

20125211353 has 32 divisors (see below), whose sum is σ = 22399977600. Its totient is φ = 17964011520.

The previous prime is 20125211321. The next prime is 20125211401. The reversal of 20125211353 is 35311252102.

It is not a de Polignac number, because 20125211353 - 25 = 20125211321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20125211753) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44822073 + ... + 44822521.

It is an arithmetic number, because the mean of its divisors is an integer number (699999300).

Almost surely, 220125211353 is an apocalyptic number.

It is an amenable number.

20125211353 is a deficient number, since it is larger than the sum of its proper divisors (2274766247).

20125211353 is a wasteful number, since it uses less digits than its factorization.

20125211353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 1800, while the sum is 25.

Adding to 20125211353 its reverse (35311252102), we get a palindrome (55436463455).

The spelling of 20125211353 in words is "twenty billion, one hundred twenty-five million, two hundred eleven thousand, three hundred fifty-three".

Divisors: 1 13 43 181 443 449 559 2353 5759 5837 7783 19049 19307 80183 81269 101179 198907 247637 250991 1042379 1056497 2585791 3447869 3494567 8553001 36002167 44822297 45429371 111189013 468028171 1548093181 20125211353