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13023525 = 352173647
BaseRepresentation
bin110001101011…
…100100100101
3220111122220210
4301223210211
511313223100
61143050033
7215461314
oct61534445
926448823
1013023525
117395849
124440919
13290cb38
141a3027b
151223c50
hexc6b925

13023525 has 12 divisors (see below), whose sum is σ = 21532352. Its totient is φ = 6945840.

The previous prime is 13023509. The next prime is 13023529. The reversal of 13023525 is 52532031.

13023525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13023525 - 24 = 13023509 is a prime.

It is a super-2 number, since 2×130235252 = 339224406851250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13023529) 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, 86749 + ... + 86898.

Almost surely, 213023525 is an apocalyptic number.

13023525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13023525 is a deficient number, since it is larger than the sum of its proper divisors (8508827).

13023525 is a wasteful number, since it uses less digits than its factorization.

13023525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173660 (or 173655 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13023525 is about 3608.8121314360. The cubic root of 13023525 is about 235.2752170173.

Adding to 13023525 its reverse (52532031), we get a palindrome (65555556).

The spelling of 13023525 in words is "thirteen million, twenty-three thousand, five hundred twenty-five".

Divisors: 1 3 5 15 25 75 173647 520941 868235 2604705 4341175 13023525