Search a number
-
+
4224025 = 521341317
BaseRepresentation
bin10000000111010000011001
321221121021101
4100013100121
52040132100
6230311401
750621641
oct20072031
97847241
104224025
112425633
1214b8561
13b4b830
147bd521
1558686a
hex407419

4224025 has 24 divisors (see below), whose sum is σ = 5796504. Its totient is φ = 3033600.

The previous prime is 4223993. The next prime is 4224037. The reversal of 4224025 is 5204224.

Adding to 4224025 its reverse (5204224), we get a palindrome (9428249).

It can be written as a sum of positive squares in 12 ways, for example, as 3888784 + 335241 = 1972^2 + 579^2 .

It is not a de Polignac number, because 4224025 - 25 = 4223993 is a prime.

It is a d-powerful number, because it can be written as 45 + 213 + 214 + 46 + 0 + 222 + 52 .

It is a Duffinian number.

4224025 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4223993 and 4224011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13167 + ... + 13483.

It is an arithmetic number, because the mean of its divisors is an integer number (241521).

Almost surely, 24224025 is an apocalyptic number.

It is an amenable number.

4224025 is a deficient number, since it is larger than the sum of its proper divisors (1572479).

4224025 is a wasteful number, since it uses less digits than its factorization.

4224025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 4224025 is about 2055.2432946004. The cubic root of 4224025 is about 161.6499197352.

The spelling of 4224025 in words is "four million, two hundred twenty-four thousand, twenty-five".

Divisors: 1 5 13 25 41 65 205 317 325 533 1025 1585 2665 4121 7925 12997 13325 20605 64985 103025 168961 324925 844805 4224025