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130616725 = 5229180161
BaseRepresentation
bin1111100100100…
…00110110010101
3100002210000110111
413302100312111
5231414213400
620543323021
73144136531
oct762206625
9302700414
10130616725
1167803308
12378b0471
13210a3405
14134c0bc1
15b7013ba
hex7c90d95

130616725 has 12 divisors (see below), whose sum is σ = 167550660. Its totient is φ = 100889600.

The previous prime is 130616723. The next prime is 130616741. The reversal of 130616725 is 527616031.

It can be written as a sum of positive squares in 6 ways, for example, as 25472209 + 105144516 = 5047^2 + 10254^2 .

It is not a de Polignac number, because 130616725 - 21 = 130616723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130616723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89356 + ... + 90805.

It is an arithmetic number, because the mean of its divisors is an integer number (13962555).

Almost surely, 2130616725 is an apocalyptic number.

It is an amenable number.

130616725 is a deficient number, since it is larger than the sum of its proper divisors (36933935).

130616725 is a wasteful number, since it uses less digits than its factorization.

130616725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180200 (or 180195 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 130616725 is about 11428.7674313550. The cubic root of 130616725 is about 507.3795163201.

The spelling of 130616725 in words is "one hundred thirty million, six hundred sixteen thousand, seven hundred twenty-five".

Divisors: 1 5 25 29 145 725 180161 900805 4504025 5224669 26123345 130616725