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1368469825 = 52173219929
BaseRepresentation
bin101000110010001…
…0011000101000001
310112101000110200121
41101210103011001
510300312013300
6343443020241
745624541642
oct12144230501
93471013617
101368469825
116425136a8
1232236a681
1318a68c178
14cda656c9
158021781a
hex51913141

1368469825 has 12 divisors (see below), whose sum is σ = 1796720940. Its totient is φ = 1030376960.

The previous prime is 1368469819. The next prime is 1368469853. The reversal of 1368469825 is 5289648631.

It can be written as a sum of positive squares in 6 ways, for example, as 98545329 + 1269924496 = 9927^2 + 35636^2 .

It is not a de Polignac number, because 1368469825 - 25 = 1368469793 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1609540 + ... + 1610389.

It is an arithmetic number, because the mean of its divisors is an integer number (149726745).

Almost surely, 21368469825 is an apocalyptic number.

It is an amenable number.

1368469825 is a deficient number, since it is larger than the sum of its proper divisors (428251115).

1368469825 is a wasteful number, since it uses less digits than its factorization.

1368469825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219956 (or 3219951 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 1368469825 is about 36992.8347791839. The cubic root of 1368469825 is about 1110.2268900151.

The spelling of 1368469825 in words is "one billion, three hundred sixty-eight million, four hundred sixty-nine thousand, eight hundred twenty-five".

Divisors: 1 5 17 25 85 425 3219929 16099645 54738793 80498225 273693965 1368469825