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144422525 = 5213894993
BaseRepresentation
bin10001001101110…
…11011001111101
3101001202102110102
420212323121331
5243433010100
622155250445
73402366632
oct1046733175
9331672412
10144422525
1174582865
1240449a25
1323bc8320
1415276189
15ca2bcd5
hex89bb67d

144422525 has 24 divisors (see below), whose sum is σ = 195065640. Its totient is φ = 105431040.

The previous prime is 144422519. The next prime is 144422527. The reversal of 144422525 is 525224441.

It can be written as a sum of positive squares in 12 ways, for example, as 98684356 + 45738169 = 9934^2 + 6763^2 .

It is not a de Polignac number, because 144422525 - 26 = 144422461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144422527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26429 + ... + 31421.

It is an arithmetic number, because the mean of its divisors is an integer number (8127735).

Almost surely, 2144422525 is an apocalyptic number.

It is an amenable number.

144422525 is a deficient number, since it is larger than the sum of its proper divisors (50643115).

144422525 is a wasteful number, since it uses less digits than its factorization.

144422525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5105 (or 5100 counting only the distinct ones).

The product of its digits is 12800, while the sum is 29.

The square root of 144422525 is about 12017.5923129386. The cubic root of 144422525 is about 524.6604304519.

Adding to 144422525 its reverse (525224441), we get a palindrome (669646966).

The spelling of 144422525 in words is "one hundred forty-four million, four hundred twenty-two thousand, five hundred twenty-five".

Divisors: 1 5 13 25 65 89 325 445 1157 2225 4993 5785 24965 28925 64909 124825 324545 444377 1622725 2221885 5776901 11109425 28884505 144422525