210425125 has 16 divisors (see below), whose sum is σ = 263141424. Its totient is φ = 168000000.

The previous prime is 210425113. The next prime is 210425129. The reversal of 210425125 is 521524012.

It can be written as a sum of positive squares in 8 ways, for example, as 33907329 + 176517796 = 5823^2 + 13286^2 .

It is not a de Polignac number, because 210425125 - 2¹⁷ = 210294053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210425096 and 210425105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210425129) 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 15 ways as a sum of consecutive naturals, for example, 73725 + ... + 76525.

It is an arithmetic number, because the mean of its divisors is an integer number (16446339).

Almost surely, 2^210425125 is an apocalyptic number.

210425125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210425125 is a deficient number, since it is larger than the sum of its proper divisors (52716299).

210425125 is an equidigital number, since it uses as much as digits as its factorization.

210425125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3417 (or 3407 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 210425125 is about 14506.0375361434. The cubic root of 210425125 is about 594.7930217164.

Adding to 210425125 its reverse (521524012), we get a palindrome (731949137).

The spelling of 210425125 in words is "two hundred ten million, four hundred twenty-five thousand, one hundred twenty-five".