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425105 = 585021
BaseRepresentation
bin1100111110010010001
3210121010122
41213302101
5102100410
613040025
73420242
oct1476221
9717118
10425105
1127042a
12186015
1311b655
14b0cc9
1585e55
hex67c91

425105 has 4 divisors (see below), whose sum is σ = 510132. Its totient is φ = 340080.

The previous prime is 425101. The next prime is 425107. The reversal of 425105 is 501524.

It is a Cunningham number, because it is equal to 6522+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153664 + 271441 = 392^2 + 521^2 .

It is not a de Polignac number, because 425105 - 22 = 425101 is a prime.

It is a super-2 number, since 2×4251052 = 361428522050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 425105.

It is not an unprimeable number, because it can be changed into a prime (425101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42506 + ... + 42515.

It is an arithmetic number, because the mean of its divisors is an integer number (127533).

2425105 is an apocalyptic number.

It is an amenable number.

425105 is a deficient number, since it is larger than the sum of its proper divisors (85027).

425105 is an equidigital number, since it uses as much as digits as its factorization.

425105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85026.

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 425105 is about 652.0007668707. Note that the first 3 decimals coincide. The cubic root of 425105 is about 75.1909209840.

Adding to 425105 its reverse (501524), we get a palindrome (926629).

The spelling of 425105 in words is "four hundred twenty-five thousand, one hundred five".

Divisors: 1 5 85021 425105