213423025 has 6 divisors (see below), whose sum is σ = 264644582. Its totient is φ = 170738400.

The previous prime is 213423017. The next prime is 213423037. The reversal of 213423025 is 520324312.

213423025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 144 + 213422881 = 12^2 + 14609^2 .

It is not a de Polignac number, because 213423025 - 2³ = 213423017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213422987 and 213423005.

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, 4268436 + ... + 4268485.

Almost surely, 2^213423025 is an apocalyptic number.

213423025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213423025 is a deficient number, since it is larger than the sum of its proper divisors (51221557).

213423025 is an equidigital number, since it uses as much as digits as its factorization.

213423025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8536931 (or 8536926 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 213423025 is about 14609.0049284679. The cubic root of 213423025 is about 597.6043596126.

Adding to 213423025 its reverse (520324312), we get a palindrome (733747337).

The spelling of 213423025 in words is "two hundred thirteen million, four hundred twenty-three thousand, twenty-five".