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25293130 = 253736781
BaseRepresentation
bin110000001111…
…1000101001010
31202121000122121
41200133011022
522433340010
62302041454
7424662622
oct140370512
952530577
1025293130
1113306115
12857928a
135317765
143505882
1523493da
hex181f14a

25293130 has 16 divisors (see below), whose sum is σ = 45656424. Its totient is φ = 10088640.

The previous prime is 25293109. The next prime is 25293143. The reversal of 25293130 is 3139252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20007729 + 5285401 = 4473^2 + 2299^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25293095 and 25293104.

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 7 ways as a sum of consecutive naturals, for example, 340 + ... + 7120.

Almost surely, 225293130 is an apocalyptic number.

25293130 is a deficient number, since it is larger than the sum of its proper divisors (20363294).

25293130 is a wasteful number, since it uses less digits than its factorization.

25293130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7161.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 25293130 is about 5029.2275748866. The cubic root of 25293130 is about 293.5401591743.

The spelling of 25293130 in words is "twenty-five million, two hundred ninety-three thousand, one hundred thirty".

Divisors: 1 2 5 10 373 746 1865 3730 6781 13562 33905 67810 2529313 5058626 12646565 25293130