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130125650 = 25217153089
BaseRepresentation
bin1111100000110…
…00111101010010
3100001212001211112
413300120331102
5231303010100
620525013322
73140023034
oct760307522
9301761745
10130125650
11674a8366
12376b4242
1320c60a35
14133d3c54
15b655b35
hex7c18f52

130125650 has 24 divisors (see below), whose sum is σ = 256272660. Its totient is φ = 48988160.

The previous prime is 130125613. The next prime is 130125683. The reversal of 130125650 is 56521031.

It can be written as a sum of positive squares in 6 ways, for example, as 89510521 + 40615129 = 9461^2 + 6373^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75695 + ... + 77394.

Almost surely, 2130125650 is an apocalyptic number.

130125650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

130125650 is a deficient number, since it is larger than the sum of its proper divisors (126147010).

130125650 is a wasteful number, since it uses less digits than its factorization.

130125650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153118 (or 153113 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 130125650 is about 11407.2630372057. The cubic root of 130125650 is about 506.7428589441.

Adding to 130125650 its reverse (56521031), we get a palindrome (186646681).

The spelling of 130125650 in words is "one hundred thirty million, one hundred twenty-five thousand, six hundred fifty".

Divisors: 1 2 5 10 17 25 34 50 85 170 425 850 153089 306178 765445 1530890 2602513 3827225 5205026 7654450 13012565 26025130 65062825 130125650