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38257188425 = 521530287537
BaseRepresentation
bin100011101000010011…
…100101111001001001
310122202012122112110122
4203220103211321021
51111322320012200
625324120153025
72523022510331
oct435023457111
9118665575418
1038257188425
11152522049a5
1274b8308775
1337b8c96801
141bccd400c1
15edd9c8385
hex8e84e5e49

38257188425 has 6 divisors (see below), whose sum is σ = 47438913678. Its totient is φ = 30605750720.

The previous prime is 38257188421. The next prime is 38257188461. The reversal of 38257188425 is 52488175283.

It can be written as a sum of positive squares in 3 ways, for example, as 464273209 + 37792915216 = 21547^2 + 194404^2 .

It is not a de Polignac number, because 38257188425 - 22 = 38257188421 is a prime.

It is a super-2 number, since 2×382571884252 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38257188421) by changing a digit.

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, 765143744 + ... + 765143793.

It is an arithmetic number, because the mean of its divisors is an integer number (7906485613).

Almost surely, 238257188425 is an apocalyptic number.

It is an amenable number.

38257188425 is a deficient number, since it is larger than the sum of its proper divisors (9181725253).

38257188425 is a wasteful number, since it uses less digits than its factorization.

38257188425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530287547 (or 1530287542 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 53.

The spelling of 38257188425 in words is "thirty-eight billion, two hundred fifty-seven million, one hundred eighty-eight thousand, four hundred twenty-five".

Divisors: 1 5 25 1530287537 7651437685 38257188425