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30525625 = 54132172
BaseRepresentation
bin111010001110…
…0100010111001
32010102212021201
41310130202321
530303310000
63010134201
7520314664
oct164344271
963385251
1030525625
111625a399
12a281361
13642a300
1440a86db
152a2e96a
hex1d1c8b9

30525625 has 45 divisors (see below), whose sum is σ = 43877361. Its totient is φ = 21216000.

The previous prime is 30525613. The next prime is 30525637. The reversal of 30525625 is 52652503.

The square root of 30525625 is 5525.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (30525613) and next prime (30525637).

It can be written as a sum of positive squares in 22 ways, for example, as 26347689 + 4177936 = 5133^2 + 2044^2 .

It is not a de Polignac number, because 30525625 - 27 = 30525497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30525593 and 30525602.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 1795617 + ... + 1795633.

Almost surely, 230525625 is an apocalyptic number.

30525625 is the 5525-th square number.

30525625 is the 2763-rd centered octagonal number.

It is an amenable number.

30525625 is a deficient number, since it is larger than the sum of its proper divisors (13351736).

30525625 is an equidigital number, since it uses as much as digits as its factorization.

30525625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The cubic root of 30525625 is about 312.5274642529.

The spelling of 30525625 in words is "thirty million, five hundred twenty-five thousand, six hundred twenty-five".

Divisors: 1 5 13 17 25 65 85 125 169 221 289 325 425 625 845 1105 1445 1625 2125 2873 3757 4225 5525 7225 8125 10625 14365 18785 21125 27625 36125 48841 71825 93925 105625 138125 180625 244205 359125 469625 1221025 1795625 2348125 6105125 30525625