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13044425 = 52521777
BaseRepresentation
bin110001110000…
…101011001001
3220112201120212
4301300223021
511314410200
61143330505
7215606252
oct61605311
926481525
1013044425
1173aa519
124450a35
1329194c4
141a37b29
15122a035
hexc70ac9

13044425 has 6 divisors (see below), whose sum is σ = 16175118. Its totient is φ = 10435520.

The previous prime is 13044407. The next prime is 13044433. The reversal of 13044425 is 52444031.

It can be written as a sum of positive squares in 3 ways, for example, as 3948169 + 9096256 = 1987^2 + 3016^2 .

It is not a de Polignac number, because 13044425 - 28 = 13044169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 13044425.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260864 + ... + 260913.

It is an arithmetic number, because the mean of its divisors is an integer number (2695853).

Almost surely, 213044425 is an apocalyptic number.

It is an amenable number.

13044425 is a deficient number, since it is larger than the sum of its proper divisors (3130693).

13044425 is an equidigital number, since it uses as much as digits as its factorization.

13044425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521787 (or 521782 counting only the distinct ones).

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

The square root of 13044425 is about 3611.7066602923. The cubic root of 13044425 is about 235.4010053886.

Adding to 13044425 its reverse (52444031), we get a palindrome (65488456).

The spelling of 13044425 in words is "thirteen million, forty-four thousand, four hundred twenty-five".

Divisors: 1 5 25 521777 2608885 13044425