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13424225 = 521314099
BaseRepresentation
bin110011001101…
…011001100001
3221021000120112
4303031121201
511414033400
61155421105
7222050453
oct63153141
927230515
1013424225
117639901
1245b4795
132a20339
141ad62d3
1512a2835
hexccd661

13424225 has 12 divisors (see below), whose sum is σ = 16777200. Its totient is φ = 10654800.

The previous prime is 13424221. The next prime is 13424231. The reversal of 13424225 is 52242431.

It is a happy number.

13424225 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13424225 - 22 = 13424221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13424225.

It is not an unprimeable number, because it can be changed into a prime (13424221) 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, 1226 + ... + 5324.

It is an arithmetic number, because the mean of its divisors is an integer number (1398100).

Almost surely, 213424225 is an apocalyptic number.

It is an amenable number.

13424225 is a deficient number, since it is larger than the sum of its proper divisors (3352975).

13424225 is a wasteful number, since it uses less digits than its factorization.

13424225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4240 (or 4235 counting only the distinct ones).

The product of its digits is 1920, while the sum is 23.

The square root of 13424225 is about 3663.9084322619. The cubic root of 13424225 is about 237.6638204935.

Adding to 13424225 its reverse (52242431), we get a palindrome (65666656).

The spelling of 13424225 in words is "thirteen million, four hundred twenty-four thousand, two hundred twenty-five".

Divisors: 1 5 25 131 655 3275 4099 20495 102475 536969 2684845 13424225