213245025 has 48 divisors (see below), whose sum is σ = 426651264. Its totient is φ = 91745280.

The previous prime is 213245009. The next prime is 213245047. The reversal of 213245025 is 520542312.

It is not a de Polignac number, because 213245025 - 2⁴ = 213245009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213244986 and 213245004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3022 + ... + 20871.

It is an arithmetic number, because the mean of its divisors is an integer number (8888568).

Almost surely, 2^213245025 is an apocalyptic number.

213245025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213245025 is an abundant number, since it is smaller than the sum of its proper divisors (213406239).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213245025 is a wasteful number, since it uses less digits than its factorization.

213245025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23930 (or 23925 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 213245025 is about 14602.9115247611. The cubic root of 213245025 is about 597.4381745405.

Adding to 213245025 its reverse (520542312), we get a palindrome (733787337).

The spelling of 213245025 in words is "two hundred thirteen million, two hundred forty-five thousand, twenty-five".