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5161404025 = 52206456161
BaseRepresentation
bin1001100111010010…
…01100011001111001
3111022201002111021001
410303221030121321
541032304412100
62212054445001
7241622132101
oct46351143171
914281074231
105161404025
112209529268
121000663761
1364342142b
1436d6b8201
152031d9d6a
hex133a4c679

5161404025 has 6 divisors (see below), whose sum is σ = 6400141022. Its totient is φ = 4129123200.

The previous prime is 5161404013. The next prime is 5161404067. The reversal of 5161404025 is 5204041615.

It can be written as a sum of positive squares in 3 ways, for example, as 821624896 + 4339779129 = 28664^2 + 65877^2 .

It is a de Polignac number, because none of the positive numbers 2k-5161404025 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5161403984 and 5161404002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103228056 + ... + 103228105.

Almost surely, 25161404025 is an apocalyptic number.

It is an amenable number.

5161404025 is a deficient number, since it is larger than the sum of its proper divisors (1238736997).

5161404025 is a wasteful number, since it uses less digits than its factorization.

5161404025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206456171 (or 206456166 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 5161404025 is about 71842.9121416998. The cubic root of 5161404025 is about 1728.1812359251.

The spelling of 5161404025 in words is "five billion, one hundred sixty-one million, four hundred four thousand, twenty-five".

Divisors: 1 5 25 206456161 1032280805 5161404025