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202420325 = 528096813
BaseRepresentation
bin11000001000010…
…11000001100101
3112002220000111002
430010023001211
5403304422300
632030323045
75005354502
oct1404130145
9462800432
10202420325
11a4296428
1257959485
1332c23b53
141cc524a9
1512b865d5
hexc10b065

202420325 has 6 divisors (see below), whose sum is σ = 251001234. Its totient is φ = 161936240.

The previous prime is 202420301. The next prime is 202420331. The reversal of 202420325 is 523024202.

It can be written as a sum of positive squares in 3 ways, for example, as 2989441 + 199430884 = 1729^2 + 14122^2 .

It is not a de Polignac number, because 202420325 - 224 = 185643109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202420297 and 202420306.

It is a congruent 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, 4048382 + ... + 4048431.

It is an arithmetic number, because the mean of its divisors is an integer number (41833539).

Almost surely, 2202420325 is an apocalyptic number.

202420325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

202420325 is a deficient number, since it is larger than the sum of its proper divisors (48580909).

202420325 is an equidigital number, since it uses as much as digits as its factorization.

202420325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096823 (or 8096818 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 202420325 is about 14227.4497011938. The cubic root of 202420325 is about 587.1531195094.

Adding to 202420325 its reverse (523024202), we get a palindrome (725444527).

The spelling of 202420325 in words is "two hundred two million, four hundred twenty thousand, three hundred twenty-five".

Divisors: 1 5 25 8096813 40484065 202420325