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25081332 = 2232090111
BaseRepresentation
bin101111110101…
…1010111110100
31202012021010020
41133223113310
522410100312
62253325140
7423121263
oct137532764
952167106
1025081332
1113180a81
1284967b0
135272233
14348c5da
15230678c
hex17eb5f4

25081332 has 12 divisors (see below), whose sum is σ = 58523136. Its totient is φ = 8360440.

The previous prime is 25081327. The next prime is 25081333. The reversal of 25081332 is 23318052.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×250813323 (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25081333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045044 + ... + 1045067.

It is an arithmetic number, because the mean of its divisors is an integer number (4876928).

Almost surely, 225081332 is an apocalyptic number.

It is an amenable number.

25081332 is an abundant number, since it is smaller than the sum of its proper divisors (33441804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25081332 is a wasteful number, since it uses less digits than its factorization.

25081332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2090118 (or 2090116 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25081332 is about 5008.1265958440. The cubic root of 25081332 is about 292.7185188633.

Adding to 25081332 its reverse (23318052), we get a palindrome (48399384).

The spelling of 25081332 in words is "twenty-five million, eighty-one thousand, three hundred thirty-two".

Divisors: 1 2 3 4 6 12 2090111 4180222 6270333 8360444 12540666 25081332