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624025 = 52109229
BaseRepresentation
bin10011000010110011001
31011201000001
42120112121
5124432100
621213001
75206213
oct2302631
91151001
10624025
11396926
12261161
1318b05c
141235b3
15c4d6a
hex98599

624025 has 12 divisors (see below), whose sum is σ = 784300. Its totient is φ = 492480.

The previous prime is 624007. The next prime is 624031. The reversal of 624025 is 520426.

It can be written as a sum of positive squares in 6 ways, for example, as 29584 + 594441 = 172^2 + 771^2 .

It is not a de Polignac number, because 624025 - 213 = 615833 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 67 + 216 + 0 + 47 + 218 + 52 .

It is a junction number, because it is equal to n+sod(n) for n = 623993 and 624011.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2611 + ... + 2839.

2624025 is an apocalyptic number.

It is an amenable number.

624025 is a deficient number, since it is larger than the sum of its proper divisors (160275).

624025 is a wasteful number, since it uses less digits than its factorization.

624025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 624025 is about 789.9525302194. The cubic root of 624025 is about 85.4543148203.

The spelling of 624025 in words is "six hundred twenty-four thousand, twenty-five".

Divisors: 1 5 25 109 229 545 1145 2725 5725 24961 124805 624025