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64125375 = 353271631
BaseRepresentation
bin1111010010011…
…1100110111111
311110122220110220
43310213212333
5112404003000
610210232423
71406025306
oct364474677
9143586426
1064125375
1133219386
1219585713
1310392912
14873343d
15596a1a0
hex3d279bf

64125375 has 32 divisors (see below), whose sum is σ = 107268096. Its totient is φ = 34020000.

The previous prime is 64125359. The next prime is 64125379. The reversal of 64125375 is 57352146.

It is not a de Polignac number, because 64125375 - 24 = 64125359 is a prime.

It is a super-2 number, since 2×641253752 = 8224127437781250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64125379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101310 + ... + 101940.

It is an arithmetic number, because the mean of its divisors is an integer number (3352128).

Almost surely, 264125375 is an apocalyptic number.

64125375 is a deficient number, since it is larger than the sum of its proper divisors (43142721).

64125375 is a wasteful number, since it uses less digits than its factorization.

64125375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 910 counting only the distinct ones).

The product of its digits is 25200, while the sum is 33.

The square root of 64125375 is about 8007.8321036345. The cubic root of 64125375 is about 400.2610275412.

The spelling of 64125375 in words is "sixty-four million, one hundred twenty-five thousand, three hundred seventy-five".

Divisors: 1 3 5 15 25 75 125 271 375 631 813 1355 1893 3155 4065 6775 9465 15775 20325 33875 47325 78875 101625 171001 236625 513003 855005 2565015 4275025 12825075 21375125 64125375