### About the Number 425 (four hundred twenty-five)

425 was the smallest number without a nBAB on 7 May 2017.

```MathBabbler Number Analyst (MBNA) output:
=========================================
425 is natural, counting, whole, integer
425 is odd (not even)
425 is not extremely odd
425 proper divisors are: 1,5,17,25,85,
425 has 5 proper divisors
425 is deficient (sum of divisors is 133; ratio: 0.312941)
425 is unhappy
425 is not a Squarefree Number: 25,
425 is composite (not prime)
425 has the prime factors: 5*5*17 (sum=27)
425 is a 17-smooth number
425 is pentagonal
425 is the sum of 3 consecutive primes
425 = 137 + 139 + 149
425 in octal is 0651
425 in binary is 110101001 (is odious)
425 nearest square numbers: -25...16 (400...441 [21])
sqrt(425) = 20.6155
ln(425) = 6.05209
log(425) = 2.62839
425! is 1.59775e+934
425 is 135.282 Pi years
425 is 21 score and 5 years
425 written as a Roman numeral is CDXXV
425 is 213^2 - 212^2 and 213 + 212 = 425
425 is a multiple of 5 & it contains a 5 (A121025)
425 is a multiple of 25 & it contains a 25
________________
425 reciprocal is 0.002352941176470588
remainders:
1,10,100,150,225,125,400,175,50,75,325,275,200,300,25,250,375,350,100
```

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 07 May 2017