210540325 has 12 divisors (see below), whose sum is σ = 276427620. Its totient is φ = 158524160.

The previous prime is 210540283. The next prime is 210540353. The reversal of 210540325 is 523045012.

It can be written as a sum of positive squares in 6 ways, for example, as 4990756 + 205549569 = 2234^2 + 14337^2 .

It is a de Polignac number, because none of the positive numbers 2^k-210540325 is a prime.

It is a super-3 number, since 3×210540325³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 210540296 and 210540305.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 247270 + ... + 248119.

It is an arithmetic number, because the mean of its divisors is an integer number (23035635).

Almost surely, 2^210540325 is an apocalyptic number.

210540325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210540325 is a deficient number, since it is larger than the sum of its proper divisors (65887295).

210540325 is a wasteful number, since it uses less digits than its factorization.

210540325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495416 (or 495411 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 210540325 is about 14510.0077532715. The cubic root of 210540325 is about 594.9015443335.

Adding to 210540325 its reverse (523045012), we get a palindrome (733585337).

The spelling of 210540325 in words is "two hundred ten million, five hundred forty thousand, three hundred twenty-five".