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2345125309 is a prime number
BaseRepresentation
bin1000101111000111…
…1100010110111101
320001102202201010221
42023301330112331
514300323002214
61024412101341
7112054144012
oct21361742675
96042681127
102345125309
11aa384239a
12555464851
132b4b14817
14183657709
15dad36e24
hex8bc7c5bd

2345125309 has 2 divisors, whose sum is σ = 2345125310. Its totient is φ = 2345125308.

The previous prime is 2345125261. The next prime is 2345125327. The reversal of 2345125309 is 9035215432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1918702809 + 426422500 = 43803^2 + 20650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-2345125309 is a prime.

It is a super-2 number, since 2×23451253092 = 10999225429824690962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2345125709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1172562654 + 1172562655.

It is an arithmetic number, because the mean of its divisors is an integer number (1172562655).

Almost surely, 22345125309 is an apocalyptic number.

It is an amenable number.

2345125309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2345125309 is an equidigital number, since it uses as much as digits as its factorization.

2345125309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 2345125309 is about 48426.4938747376. The cubic root of 2345125309 is about 1328.5829800332.

The spelling of 2345125309 in words is "two billion, three hundred forty-five million, one hundred twenty-five thousand, three hundred nine".