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23020415225 = 521897348533
BaseRepresentation
bin10101011100000111…
…111010100011111001
32012102022222021000022
4111130013322203321
5334121211241400
614324143220225
71443316205123
oct253407724371
965368867008
1023020415225
119843473755
1245655a7675
13222b389592
1411854c4213
158eaee3b85
hex55c1fa8f9

23020415225 has 12 divisors (see below), whose sum is σ = 28547407596. Its totient is φ = 18414982080.

The previous prime is 23020415179. The next prime is 23020415233. The reversal of 23020415225 is 52251402032.

It can be written as a sum of positive squares in 6 ways, for example, as 243049 + 23020172176 = 493^2 + 151724^2 .

It is not a de Polignac number, because 23020415225 - 218 = 23020153081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23020415194 and 23020415203.

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, 450059 + ... + 498591.

It is an arithmetic number, because the mean of its divisors is an integer number (2378950633).

Almost surely, 223020415225 is an apocalyptic number.

23020415225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

23020415225 is a deficient number, since it is larger than the sum of its proper divisors (5526992371).

23020415225 is a wasteful number, since it uses less digits than its factorization.

23020415225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67516 (or 67511 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 23020415225 its reverse (52251402032), we get a palindrome (75271817257).

The spelling of 23020415225 in words is "twenty-three billion, twenty million, four hundred fifteen thousand, two hundred twenty-five".

Divisors: 1 5 25 18973 48533 94865 242665 474325 1213325 920816609 4604083045 23020415225