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525925 = 52109193
BaseRepresentation
bin10000000011001100101
3222201102201
42000121211
5113312200
615134501
74320211
oct2003145
9881381
10525925
1132a154
12214431
131554ca
14d9941
15a5c6a
hex80665

525925 has 12 divisors (see below), whose sum is σ = 661540. Its totient is φ = 414720.

The previous prime is 525923. The next prime is 525937. The reversal of 525925 is 529525.

It can be written as a sum of positive squares in 6 ways, for example, as 16129 + 509796 = 127^2 + 714^2 .

It is not a de Polignac number, because 525925 - 21 = 525923 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

525925 is a modest number, since divided by 925 gives 525 as remainder.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 525893 and 525902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2629 + ... + 2821.

2525925 is an apocalyptic number.

It is an amenable number.

525925 is a deficient number, since it is larger than the sum of its proper divisors (135615).

525925 is a wasteful number, since it uses less digits than its factorization.

525925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 307 counting only the distinct ones).

The product of its digits is 4500, while the sum is 28.

The square root of 525925 is about 725.2068670386. The cubic root of 525925 is about 80.7187829632.

Subtracting 525925 from its reverse (529525), we obtain a square (3600 = 602).

The spelling of 525925 in words is "five hundred twenty-five thousand, nine hundred twenty-five".

Divisors: 1 5 25 109 193 545 965 2725 4825 21037 105185 525925