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207039025 = 5210338017
BaseRepresentation
bin11000101011100…
…10101000110001
3112102120200011001
430111302220301
5411000222100
632313322001
75062542214
oct1425625061
9472520131
10207039025
11a6960536
1259406301
1333b801cb
141d6d577b
1513299d6a
hexc572a31

207039025 has 12 divisors (see below), whose sum is σ = 257008972. Its totient is φ = 165450240.

The previous prime is 207039017. The next prime is 207039043. The reversal of 207039025 is 520930702.

It can be written as a sum of positive squares in 6 ways, for example, as 7890481 + 199148544 = 2809^2 + 14112^2 .

It is not a de Polignac number, because 207039025 - 23 = 207039017 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 207038984 and 207039002.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 21817 + ... + 29833.

Almost surely, 2207039025 is an apocalyptic number.

207039025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

207039025 is a deficient number, since it is larger than the sum of its proper divisors (49969947).

207039025 is a wasteful number, since it uses less digits than its factorization.

207039025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9060 (or 9055 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 207039025 is about 14388.8507185251. The cubic root of 207039025 is about 591.5853418167.

Adding to 207039025 its reverse (520930702), we get a palindrome (727969727).

The spelling of 207039025 in words is "two hundred seven million, thirty-nine thousand, twenty-five".

Divisors: 1 5 25 1033 5165 8017 25825 40085 200425 8281561 41407805 207039025