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25130208 = 253261773
BaseRepresentation
bin101111111011…
…1010011100000
31202021202011110
41133313103200
522413131313
62254343320
7423413625
oct137672340
952252143
1025130208
1113204774
1284bab40
13528b55c
1434a234c
152315ec3
hex17f74e0

25130208 has 24 divisors (see below), whose sum is σ = 65967048. Its totient is φ = 8376704.

The previous prime is 25130201. The next prime is 25130213. The reversal of 25130208 is 80203152.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25130201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130791 + ... + 130982.

It is an arithmetic number, because the mean of its divisors is an integer number (2748627).

Almost surely, 225130208 is an apocalyptic number.

It is an amenable number.

25130208 is an abundant number, since it is smaller than the sum of its proper divisors (40836840).

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

25130208 is a wasteful number, since it uses less digits than its factorization.

25130208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261786 (or 261778 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 25130208 is about 5013.0038898848. The cubic root of 25130208 is about 292.9085357131.

The spelling of 25130208 in words is "twenty-five million, one hundred thirty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 261773 523546 785319 1047092 1570638 2094184 3141276 4188368 6282552 8376736 12565104 25130208