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130768025 = 5225720353
BaseRepresentation
bin1111100101101…
…01110010011001
3100010001201000012
413302311302121
5231434034100
620550451305
73145336613
oct762656231
9303051005
10130768025
11678a6a53
1237963b35
132112723b
141351ddb3
15b731135
hex7cb5c99

130768025 has 12 divisors (see below), whose sum is σ = 162791292. Its totient is φ = 104202240.

The previous prime is 130768021. The next prime is 130768049. The reversal of 130768025 is 520867031.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1990921 + 128777104 = 1411^2 + 11348^2 .

It is not a de Polignac number, because 130768025 - 22 = 130768021 is a prime.

It is a hoax number, since the sum of its digits (32) 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 = 130767982 and 130768000.

It is not an unprimeable number, because it can be changed into a prime (130768021) 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, 3752 + ... + 16601.

It is an arithmetic number, because the mean of its divisors is an integer number (13565941).

Almost surely, 2130768025 is an apocalyptic number.

It is an amenable number.

130768025 is a deficient number, since it is larger than the sum of its proper divisors (32023267).

130768025 is a wasteful number, since it uses less digits than its factorization.

130768025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20620 (or 20615 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 130768025 is about 11435.3847770856. The cubic root of 130768025 is about 507.5753485639.

The spelling of 130768025 in words is "one hundred thirty million, seven hundred sixty-eight thousand, twenty-five".

Divisors: 1 5 25 257 1285 6425 20353 101765 508825 5230721 26153605 130768025