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263125 = 54421
BaseRepresentation
bin1000000001111010101
3111100221101
41000033111
531410000
65350101
72144062
oct1001725
9440841
10263125
1116a765
12108331
13929c5
146bc69
1552e6a
hex403d5

263125 has 10 divisors (see below), whose sum is σ = 329582. Its totient is φ = 210000.

The previous prime is 263119. The next prime is 263129. The reversal of 263125 is 521362.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 194481 + 68644 = 441^2 + 262^2 .

It is not a de Polignac number, because 263125 - 211 = 261077 is a prime.

It is a Duffinian number.

263125 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 415 + ... + 835.

2263125 is an apocalyptic number.

263125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

263125 is a deficient number, since it is larger than the sum of its proper divisors (66457).

263125 is an frugal number, since it uses more digits than its factorization.

263125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 426 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 263125 is about 512.9571132171. The cubic root of 263125 is about 64.0797346055.

Adding to 263125 its reverse (521362), we get a palindrome (784487).

The spelling of 263125 in words is "two hundred sixty-three thousand, one hundred twenty-five".

Divisors: 1 5 25 125 421 625 2105 10525 52625 263125