Search a number
-
+
225653260 = 22571611809
BaseRepresentation
bin11010111001100…
…11001000001100
3120201121101002011
431130303020030
5430231401020
634220311004
75410010140
oct1534631014
9521541064
10225653260
111064146a8
12636a2464
1337999951
1421d7d220
1514c2535a
hexd73320c

225653260 has 24 divisors (see below), whose sum is σ = 541568160. Its totient is φ = 77366784.

The previous prime is 225653237. The next prime is 225653261. The reversal of 225653260 is 62356522.

It is not an unprimeable number, because it can be changed into a prime (225653261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805765 + ... + 806044.

It is an arithmetic number, because the mean of its divisors is an integer number (22565340).

Almost surely, 2225653260 is an apocalyptic number.

225653260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

225653260 is an abundant number, since it is smaller than the sum of its proper divisors (315914900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

225653260 is a wasteful number, since it uses less digits than its factorization.

225653260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611825 (or 1611823 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 225653260 is about 15021.7595507317. The cubic root of 225653260 is about 608.8082618055.

The spelling of 225653260 in words is "two hundred twenty-five million, six hundred fifty-three thousand, two hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 1611809 3223618 6447236 8059045 11282663 16118090 22565326 32236180 45130652 56413315 112826630 225653260