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13953925 = 521035419
BaseRepresentation
bin110101001110…
…101110000101
3222020221012001
4311032232011
512033011200
61215025301
7226414666
oct65165605
928227161
1013953925
117970877
12480b231
132b7747b
141bd336d
15135976a
hexd4eb85

13953925 has 12 divisors (see below), whose sum is σ = 17474080. Its totient is φ = 11052720.

The previous prime is 13953869. The next prime is 13953931. The reversal of 13953925 is 52935931.

It is a de Polignac number, because none of the positive numbers 2k-13953925 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 135 + ... + 5284.

Almost surely, 213953925 is an apocalyptic number.

It is an amenable number.

13953925 is a deficient number, since it is larger than the sum of its proper divisors (3520155).

13953925 is a wasteful number, since it uses less digits than its factorization.

13953925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5532 (or 5527 counting only the distinct ones).

The product of its digits is 36450, while the sum is 37.

The square root of 13953925 is about 3735.4952817531. The cubic root of 13953925 is about 240.7495374899.

It can be divided in two parts, 13953 and 925, that added together give a triangular number (14878 = T172).

The spelling of 13953925 in words is "thirteen million, nine hundred fifty-three thousand, nine hundred twenty-five".

Divisors: 1 5 25 103 515 2575 5419 27095 135475 558157 2790785 13953925