210013225 has 6 divisors (see below), whose sum is σ = 260416430. Its totient is φ = 168010560.

The previous prime is 210013217. The next prime is 210013231. The reversal of 210013225 is 522310012.

It can be written as a sum of positive squares in 3 ways, for example, as 34609689 + 175403536 = 5883^2 + 13244^2 .

It is not a de Polignac number, because 210013225 - 2³ = 210013217 is a prime.

It is a super-3 number, since 3×210013225³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210013199 and 210013208.

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, 4200240 + ... + 4200289.

Almost surely, 2^210013225 is an apocalyptic number.

210013225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210013225 is a deficient number, since it is larger than the sum of its proper divisors (50403205).

210013225 is an equidigital number, since it uses as much as digits as its factorization.

210013225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8400539 (or 8400534 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 210013225 is about 14491.8330448567. The cubic root of 210013225 is about 594.4046725331.

Adding to 210013225 its reverse (522310012), we get a palindrome (732323237).

The spelling of 210013225 in words is "two hundred ten million, thirteen thousand, two hundred twenty-five".