213340025 has 6 divisors (see below), whose sum is σ = 264541662. Its totient is φ = 170672000.

The previous prime is 213339989. The next prime is 213340027. The reversal of 213340025 is 520043312.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 92416 + 213247609 = 304^2 + 14603^2 .

It is not a de Polignac number, because 213340025 - 2¹⁴ = 213323641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213339979 and 213340006.

It is not an unprimeable number, because it can be changed into a prime (213340027) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4266776 + ... + 4266825.

It is an arithmetic number, because the mean of its divisors is an integer number (44090277).

Almost surely, 2^213340025 is an apocalyptic number.

213340025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213340025 is a deficient number, since it is larger than the sum of its proper divisors (51201637).

213340025 is an equidigital number, since it uses as much as digits as its factorization.

213340025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533611 (or 8533606 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 213340025 is about 14606.1639385569. The cubic root of 213340025 is about 597.5268803229.

Adding to 213340025 its reverse (520043312), we get a palindrome (733383337).

The spelling of 213340025 in words is "two hundred thirteen million, three hundred forty thousand, twenty-five".