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30151025 = 5210111941
BaseRepresentation
bin111001100000…
…1000101110001
32002201211102122
41303001011301
530204313100
62554124025
7514164602
oct163010561
962654378
1030151025
1116023a03
12a120615
136328958
14400bda9
1529a8985
hex1cc1171

30151025 has 12 divisors (see below), whose sum is σ = 37760604. Its totient is φ = 23880000.

The previous prime is 30151007. The next prime is 30151049. The reversal of 30151025 is 52015103.

It can be written as a sum of positive squares in 6 ways, for example, as 21904 + 30129121 = 148^2 + 5489^2 .

It is not a de Polignac number, because 30151025 - 26 = 30150961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30150994 and 30151012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3446 + ... + 8495.

It is an arithmetic number, because the mean of its divisors is an integer number (3146717).

Almost surely, 230151025 is an apocalyptic number.

It is an amenable number.

30151025 is a deficient number, since it is larger than the sum of its proper divisors (7609579).

30151025 is a wasteful number, since it uses less digits than its factorization.

30151025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12052 (or 12047 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 30151025 is about 5490.9949007443. The cubic root of 30151025 is about 311.2437889547.

Adding to 30151025 its reverse (52015103), we get a palindrome (82166128).

The spelling of 30151025 in words is "thirty million, one hundred fifty-one thousand, twenty-five".

Divisors: 1 5 25 101 505 2525 11941 59705 298525 1206041 6030205 30151025