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1670081125 = 5313360649
BaseRepresentation
bin110001110001011…
…0110101001100101
311022101112220121111
41203202312221211
511410020044000
6433415345021
756246312116
oct14342665145
94271486544
101670081125
11787798739
123a7382171
132080024ab
1411bb3820d
159b943cba
hex638b6a65

1670081125 has 8 divisors (see below), whose sum is σ = 2084261400. Its totient is φ = 1336064800.

The previous prime is 1670081123. The next prime is 1670081137. The reversal of 1670081125 is 5211800761.

It can be written as a sum of positive squares in 4 ways, for example, as 495374049 + 1174707076 = 22257^2 + 34274^2 .

It is not a de Polignac number, because 1670081125 - 21 = 1670081123 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1670081123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6680200 + ... + 6680449.

It is an arithmetic number, because the mean of its divisors is an integer number (260532675).

Almost surely, 21670081125 is an apocalyptic number.

It is an amenable number.

1670081125 is a deficient number, since it is larger than the sum of its proper divisors (414180275).

1670081125 is an equidigital number, since it uses as much as digits as its factorization.

1670081125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13360664 (or 13360654 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 31.

The square root of 1670081125 is about 40866.6260535415. The cubic root of 1670081125 is about 1186.4402068156.

Adding to 1670081125 its reverse (5211800761), we get a palindrome (6881881886).

The spelling of 1670081125 in words is "one billion, six hundred seventy million, eighty-one thousand, one hundred twenty-five".

Divisors: 1 5 25 125 13360649 66803245 334016225 1670081125