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20300244325 = 522928000337
BaseRepresentation
bin10010111001111111…
…010010010101100101
31221101202111021000221
4102321333102111211
5313033330304300
613154212404341
71316026141534
oct227177222545
957352437027
1020300244325
118677a60029
123b266166b1
131bb695c9ba
14da812031b
157dc2c731a
hex4b9fd2565

20300244325 has 12 divisors (see below), whose sum is σ = 26040314340. Its totient is φ = 15680188160.

The previous prime is 20300244319. The next prime is 20300244329. The reversal of 20300244325 is 52344200302.

It can be written as a sum of positive squares in 6 ways, for example, as 755645121 + 19544599204 = 27489^2 + 139802^2 .

It is not a de Polignac number, because 20300244325 - 231 = 18152760677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 20300244325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300244329) 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, 13999444 + ... + 14000893.

It is an arithmetic number, because the mean of its divisors is an integer number (2170026195).

Almost surely, 220300244325 is an apocalyptic number.

20300244325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20300244325 is a deficient number, since it is larger than the sum of its proper divisors (5740070015).

20300244325 is a wasteful number, since it uses less digits than its factorization.

20300244325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28000376 (or 28000371 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

Adding to 20300244325 its reverse (52344200302), we get a palindrome (72644444627).

The spelling of 20300244325 in words is "twenty billion, three hundred million, two hundred forty-four thousand, three hundred twenty-five".

Divisors: 1 5 25 29 145 725 28000337 140001685 700008425 812009773 4060048865 20300244325