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1379192825 = 5255167713
BaseRepresentation
bin101001000110100…
…1100111111111001
310120010012020212202
41102031030333321
510311033132300
6344504515545
746114642223
oct12215147771
93503166782
101379192825
11648577a8a
12325a7bbb5
1318c974b3a
14d1257413
1581134ad5
hex5234cff9

1379192825 has 6 divisors (see below), whose sum is σ = 1710199134. Its totient is φ = 1103354240.

The previous prime is 1379192819. The next prime is 1379192827. The reversal of 1379192825 is 5282919731.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 13446889 + 1365745936 = 3667^2 + 36956^2 .

It is not a de Polignac number, because 1379192825 - 216 = 1379127289 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1379192825.

It is not an unprimeable number, because it can be changed into a prime (1379192827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27583832 + ... + 27583881.

It is an arithmetic number, because the mean of its divisors is an integer number (285033189).

Almost surely, 21379192825 is an apocalyptic number.

It is an amenable number.

1379192825 is a deficient number, since it is larger than the sum of its proper divisors (331006309).

1379192825 is an equidigital number, since it uses as much as digits as its factorization.

1379192825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55167723 (or 55167718 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1379192825 is about 37137.4854426091. The cubic root of 1379192825 is about 1113.1191722260.

The spelling of 1379192825 in words is "one billion, three hundred seventy-nine million, one hundred ninety-two thousand, eight hundred twenty-five".

Divisors: 1 5 25 55167713 275838565 1379192825