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13925605 = 514291949
BaseRepresentation
bin110101000111…
…110011100101
3222012111100011
4311013303211
512031104410
61214250221
7226236301
oct65076345
928174304
1013925605
117951571
1247b6971
132b67605
141bc6d01
15135118a
hexd47ce5

13925605 has 8 divisors (see below), whose sum is σ = 16731000. Its totient is φ = 11126976.

The previous prime is 13925573. The next prime is 13925617. The reversal of 13925605 is 50652931.

It can be written as a sum of positive squares in 4 ways, for example, as 690561 + 13235044 = 831^2 + 3638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13925605 - 25 = 13925573 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6171 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (2091375).

Almost surely, 213925605 is an apocalyptic number.

It is an amenable number.

13925605 is a deficient number, since it is larger than the sum of its proper divisors (2805395).

13925605 is a wasteful number, since it uses less digits than its factorization.

13925605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3383.

The product of its (nonzero) digits is 8100, while the sum is 31.

The square root of 13925605 is about 3731.7026944814. The cubic root of 13925605 is about 240.5865571914.

The spelling of 13925605 in words is "thirteen million, nine hundred twenty-five thousand, six hundred five".

Divisors: 1 5 1429 1949 7145 9745 2785121 13925605