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11881925 = 521143207
BaseRepresentation
bin101101010100…
…110111000101
3211100122221022
4231110313011
511020210200
61102400525
7202665116
oct55246705
924318838
1011881925
116786080
123b90145
132600333
14181420d
15109a885
hexb54dc5

11881925 has 12 divisors (see below), whose sum is σ = 16073376. Its totient is φ = 8641200.

The previous prime is 11881913. The next prime is 11881927. The reversal of 11881925 is 52918811.

It is not a de Polignac number, because 11881925 - 212 = 11877829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11881927) by changing a digit.

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, 21329 + ... + 21878.

It is an arithmetic number, because the mean of its divisors is an integer number (1339448).

Almost surely, 211881925 is an apocalyptic number.

It is an amenable number.

11881925 is a deficient number, since it is larger than the sum of its proper divisors (4191451).

11881925 is a wasteful number, since it uses less digits than its factorization.

11881925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43228 (or 43223 counting only the distinct ones).

The product of its digits is 5760, while the sum is 35.

The square root of 11881925 is about 3447.0168261846. The cubic root of 11881925 is about 228.1894713630.

It can be divided in two parts, 1188 and 1925, that added together give a palindrome (3113).

The spelling of 11881925 in words is "eleven million, eight hundred eighty-one thousand, nine hundred twenty-five".

Divisors: 1 5 11 25 55 275 43207 216035 475277 1080175 2376385 11881925