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13692025 = 52547681
BaseRepresentation
bin110100001110…
…110001111001
3221202121221001
4310032301321
512001121100
61205245001
7224244304
oct64166171
927677831
1013692025
117802026
124703761
132ab51b9
141b65b3b
151306d6a
hexd0ec79

13692025 has 6 divisors (see below), whose sum is σ = 16978142. Its totient is φ = 10953600.

The previous prime is 13691983. The next prime is 13692037. The reversal of 13692025 is 52029631.

It can be written as a sum of positive squares in 3 ways, for example, as 4769856 + 8922169 = 2184^2 + 2987^2 .

It is not a de Polignac number, because 13692025 - 27 = 13691897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13691984 and 13692002.

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, 273816 + ... + 273865.

Almost surely, 213692025 is an apocalyptic number.

It is an amenable number.

13692025 is a deficient number, since it is larger than the sum of its proper divisors (3286117).

13692025 is an equidigital number, since it uses as much as digits as its factorization.

13692025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547691 (or 547686 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 13692025 is about 3700.2736385300. The cubic root of 13692025 is about 239.2338123755.

It can be divided in two parts, 1369 and 2025, that multiplied together give a square (2772225 = 16652).

The spelling of 13692025 in words is "thirteen million, six hundred ninety-two thousand, twenty-five".

Divisors: 1 5 25 547681 2738405 13692025