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6489108025 = 52161112
BaseRepresentation
bin1100000101100011…
…11110111000111001
3121202020101211202021
412002301332320321
5101242202424100
62551524034441
7316543336201
oct60261767071
917666354667
106489108025
11282aa289a4
121311232a21
137c55092ba
14457b6b401
1527ea4da1a
hex182c7ee39

6489108025 has 9 divisors (see below), whose sum is σ = 8046993423. Its totient is φ = 5190964200.

The previous prime is 6489108011. The next prime is 6489108049. The reversal of 6489108025 is 5208019846.

It is a happy number.

The square root of 6489108025 is 80555.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2336078889 + 4153029136 = 48333^2 + 64444^2 .

It is not a de Polignac number, because 6489108025 - 25 = 6489107993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 394720 + ... + 410830.

Almost surely, 26489108025 is an apocalyptic number.

6489108025 is the 80555-th square number.

6489108025 is the 40278-th centered octagonal number.

It is an amenable number.

6489108025 is a deficient number, since it is larger than the sum of its proper divisors (1557885398).

6489108025 is an frugal number, since it uses more digits than its factorization.

6489108025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32232 (or 16116 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The cubic root of 6489108025 is about 1865.2125746287.

The spelling of 6489108025 in words is "six billion, four hundred eighty-nine million, one hundred eight thousand, twenty-five".