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13530012425 = 52631857687
BaseRepresentation
bin11001001100111001…
…11001101100001001
31021220221002211211022
430212130321230021
5210202140344200
610114323042225
7656200131236
oct144634715411
937827084738
1013530012425
115813380656
122757210375
131378134617
14924cd478d
15542c47885
hex326739b09

13530012425 has 12 divisors (see below), whose sum is σ = 16803823296. Its totient is φ = 10806843600.

The previous prime is 13530012421. The next prime is 13530012427. The reversal of 13530012425 is 52421003531.

It is a happy number.

13530012425 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 13530012425 - 22 = 13530012421 is a prime.

It is a super-2 number, since 2×135300124252 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13530012394 and 13530012403.

It is not an unprimeable number, because it can be changed into a prime (13530012421) 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 11 ways as a sum of consecutive naturals, for example, 413069 + ... + 444618.

It is an arithmetic number, because the mean of its divisors is an integer number (1400318608).

Almost surely, 213530012425 is an apocalyptic number.

It is an amenable number.

13530012425 is a deficient number, since it is larger than the sum of its proper divisors (3273810871).

13530012425 is an equidigital number, since it uses as much as digits as its factorization.

13530012425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858328 (or 858323 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 13530012425 its reverse (52421003531), we get a palindrome (65951015956).

The spelling of 13530012425 in words is "thirteen billion, five hundred thirty million, twelve thousand, four hundred twenty-five".

Divisors: 1 5 25 631 3155 15775 857687 4288435 21442175 541200497 2706002485 13530012425