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223493125 = 543531013
BaseRepresentation
bin11010101001000…
…11110000000101
3120120112121221011
431110203300011
5424203240000
634102122221
75352442312
oct1524436005
9516477834
10223493125
11105179769
1262a20371
13373c166b
1421979d09
151494a2ba
hexd523c05

223493125 has 20 divisors (see below), whose sum is σ = 280344636. Its totient is φ = 178112000.

The previous prime is 223493117. The next prime is 223493129. The reversal of 223493125 is 521394322.

It can be written as a sum of positive squares in 10 ways, for example, as 221920609 + 1572516 = 14897^2 + 1254^2 .

It is not a de Polignac number, because 223493125 - 23 = 223493117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223493129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 220119 + ... + 221131.

Almost surely, 2223493125 is an apocalyptic number.

223493125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

223493125 is a deficient number, since it is larger than the sum of its proper divisors (56851511).

223493125 is an equidigital number, since it uses as much as digits as its factorization.

223493125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386 (or 1371 counting only the distinct ones).

The product of its digits is 12960, while the sum is 31.

The square root of 223493125 is about 14949.6864515615. The cubic root of 223493125 is about 606.8593617977.

It can be divided in two parts, 2234 and 93125, that added together give a palindrome (95359).

The spelling of 223493125 in words is "two hundred twenty-three million, four hundred ninety-three thousand, one hundred twenty-five".

Divisors: 1 5 25 125 353 625 1013 1765 5065 8825 25325 44125 126625 220625 357589 633125 1787945 8939725 44698625 223493125