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520025 = 52113161
BaseRepresentation
bin1111110111101011001
3222102100012
41332331121
5113120100
615051305
74264052
oct1767531
9872305
10520025
11325780
12210b35
1315290c
14d7729
15a4135
hex7ef59

520025 has 24 divisors (see below), whose sum is σ = 738048. Its totient is φ = 360000.

The previous prime is 520021. The next prime is 520031.

It can be divided in two parts, 5200 and 25, that added together give a palindrome (5225).

520025 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 520025 - 22 = 520021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 519991 and 520009.

It is not an unprimeable number, because it can be changed into a prime (520021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8495 + ... + 8555.

It is an arithmetic number, because the mean of its divisors is an integer number (30752).

2520025 is an apocalyptic number.

520025 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

520025 is a deficient number, since it is larger than the sum of its proper divisors (218023).

520025 is a wasteful number, since it uses less digits than its factorization.

520025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 14.

The square root of 520025 is about 721.1275892656. The cubic root of 520025 is about 80.4158038453.

The spelling of 520025 in words is "five hundred twenty thousand, twenty-five".

Divisors: 1 5 11 25 31 55 61 155 275 305 341 671 775 1525 1705 1891 3355 8525 9455 16775 20801 47275 104005 520025