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12285025 = 527012
BaseRepresentation
bin101110110111…
…010001100001
3212010010212221
4232313101201
511121110100
61115151041
7206264254
oct56672141
925103787
1012285025
116a30a15
124145481
13271195c
1418bb09b
15112a01a
hexbb7461

12285025 has 9 divisors (see below), whose sum is σ = 15255193. Its totient is φ = 9814000.

The previous prime is 12285023. The next prime is 12285037. The reversal of 12285025 is 52058221.

The square root of 12285025 is 3505.

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

It can be written as a sum of positive squares in 4 ways, for example, as 833569 + 11451456 = 913^2 + 3384^2 .

It is not a de Polignac number, because 12285025 - 21 = 12285023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12285023) 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 8 ways as a sum of consecutive naturals, for example, 17175 + ... + 17875.

Almost surely, 212285025 is an apocalyptic number.

12285025 is the 3505-th square number.

12285025 is the 1753-rd centered octagonal number.

It is an amenable number.

12285025 is a deficient number, since it is larger than the sum of its proper divisors (2970168).

12285025 is an frugal number, since it uses more digits than its factorization.

12285025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The cubic root of 12285025 is about 230.7413069489.

Multiplying 12285025 by its sum of digits (25), we get a square (307125625 = 175252).

12285025 divided by its sum of digits (25) gives a square (491401 = 7012).

Multiplying 12285025 by its product of nonzero digits (1600), we get a square (19656040000 = 1402002).

The spelling of 12285025 in words is "twelve million, two hundred eighty-five thousand, twenty-five".

Divisors: 1 5 25 701 3505 17525 491401 2457005 12285025