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25025152 = 271931013
BaseRepresentation
bin101111101110…
…1101010000000
31202002102001111
41133131222000
522401301102
62252213104
7422465425
oct137355200
952072044
1025025152
1113142849
12846a194
1352527a9
143475d4c
1522e4cd7
hex17dda80

25025152 has 32 divisors (see below), whose sum is σ = 50162580. Its totient is φ = 12435456.

The previous prime is 25025149. The next prime is 25025159. The reversal of 25025152 is 25152052.

It can be written as a sum of positive squares in 2 ways, for example, as 19149376 + 5875776 = 4376^2 + 2424^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25025159) 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 3 ways as a sum of consecutive naturals, for example, 24198 + ... + 25210.

Almost surely, 225025152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25025152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25081290).

25025152 is an abundant number, since it is smaller than the sum of its proper divisors (25137428).

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

25025152 is a wasteful number, since it uses less digits than its factorization.

25025152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1208 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 22.

The square root of 25025152 is about 5002.5145676949. The cubic root of 25025152 is about 292.4998008132.

The spelling of 25025152 in words is "twenty-five million, twenty-five thousand, one hundred fifty-two".

Divisors: 1 2 4 8 16 32 64 128 193 386 772 1013 1544 2026 3088 4052 6176 8104 12352 16208 24704 32416 64832 129664 195509 391018 782036 1564072 3128144 6256288 12512576 25025152