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212298025 = 528491921
BaseRepresentation
bin11001010011101…
…10100100101001
3112210110212010211
430221312210221
5413322014100
633022141121
75155334452
oct1451664451
9483425124
10212298025
11a9922715
125b1217a1
1334ca1b44
14202a4129
15139881ba
hexca76929

212298025 has 6 divisors (see below), whose sum is σ = 263249582. Its totient is φ = 169838400.

The previous prime is 212298017. The next prime is 212298103. The reversal of 212298025 is 520892212.

212298025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1089936 + 211208089 = 1044^2 + 14533^2 .

It is not a de Polignac number, because 212298025 - 23 = 212298017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4245936 + ... + 4245985.

Almost surely, 2212298025 is an apocalyptic number.

212298025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

212298025 is a deficient number, since it is larger than the sum of its proper divisors (50951557).

212298025 is an equidigital number, since it uses as much as digits as its factorization.

212298025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8491931 (or 8491926 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 212298025 is about 14570.4504048434. The cubic root of 212298025 is about 596.5524742542.

The spelling of 212298025 in words is "two hundred twelve million, two hundred ninety-eight thousand, twenty-five".

Divisors: 1 5 25 8491921 42459605 212298025