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57243340925 = 526137536617
BaseRepresentation
bin110101010011111110…
…000001000001111101
312110202101110000101222
4311103332001001331
51414213243402200
642144111243125
74064354240531
oct652376010175
9173671400358
1057243340925
1122305412321
12b1168194a5
1355235c6384
142ab0711bc1
151750729d85
hexd53f8107d

57243340925 has 12 divisors (see below), whose sum is σ = 72145379796. Its totient is φ = 45043939200.

The previous prime is 57243340883. The next prime is 57243340937. The reversal of 57243340925 is 52904334275.

It can be written as a sum of positive squares in 6 ways, for example, as 20594833081 + 36648507844 = 143509^2 + 191438^2 .

It is not a de Polignac number, because 57243340925 - 28 = 57243340669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 18766784 + ... + 18769833.

It is an arithmetic number, because the mean of its divisors is an integer number (6012114983).

Almost surely, 257243340925 is an apocalyptic number.

It is an amenable number.

57243340925 is a deficient number, since it is larger than the sum of its proper divisors (14902038871).

57243340925 is a wasteful number, since it uses less digits than its factorization.

57243340925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37536688 (or 37536683 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 57243340925 in words is "fifty-seven billion, two hundred forty-three million, three hundred forty thousand, nine hundred twenty-five".

Divisors: 1 5 25 61 305 1525 37536617 187683085 938415425 2289733637 11448668185 57243340925