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13063525 = 52522541
BaseRepresentation
bin110001110101…
…010101100101
3220120200210021
4301311111211
511321013100
61143555141
7216016036
oct61652545
926520707
1013063525
117412902
12445bab1
1329250c7
141a40a8d
151230a1a
hexc75565

13063525 has 6 divisors (see below), whose sum is σ = 16198802. Its totient is φ = 10450800.

The previous prime is 13063489. The next prime is 13063537. The reversal of 13063525 is 52536031.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 146689 + 12916836 = 383^2 + 3594^2 .

It is not a de Polignac number, because 13063525 - 27 = 13063397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 522541 = 13063525 / (1 + 3 + 0 + 6 + 3 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13063525.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 261246 + ... + 261295.

Almost surely, 213063525 is an apocalyptic number.

It is an amenable number.

13063525 is a deficient number, since it is larger than the sum of its proper divisors (3135277).

13063525 is an equidigital number, since it uses as much as digits as its factorization.

13063525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522551 (or 522546 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 13063525 is about 3614.3498723837. The cubic root of 13063525 is about 235.5158428644.

Adding to 13063525 its reverse (52536031), we get a palindrome (65599556).

The spelling of 13063525 in words is "thirteen million, sixty-three thousand, five hundred twenty-five".

Divisors: 1 5 25 522541 2612705 13063525