213346025 has 6 divisors (see below), whose sum is σ = 264549102. Its totient is φ = 170676800.

The previous prime is 213346013. The next prime is 213346031. The reversal of 213346025 is 520643312.

It can be written as a sum of positive squares in 3 ways, for example, as 74011609 + 139334416 = 8603^2 + 11804^2 .

It is not a de Polignac number, because 213346025 - 2⁴ = 213346009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213345985 and 213346003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4266896 + ... + 4266945.

It is an arithmetic number, because the mean of its divisors is an integer number (44091517).

Almost surely, 2^213346025 is an apocalyptic number.

213346025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213346025 is a deficient number, since it is larger than the sum of its proper divisors (51203077).

213346025 is an equidigital number, since it uses as much as digits as its factorization.

213346025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8533851 (or 8533846 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 213346025 is about 14606.3693298506. The cubic root of 213346025 is about 597.5324819092.

Adding to 213346025 its reverse (520643312), we get a palindrome (733989337).

The spelling of 213346025 in words is "two hundred thirteen million, three hundred forty-six thousand, twenty-five".