213712025 has 12 divisors (see below), whose sum is σ = 265472592. Its totient is φ = 170666640.

The previous prime is 213712013. The next prime is 213712033. The reversal of 213712025 is 520217312.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-213712025 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 7394 + ... + 21956.

It is an arithmetic number, because the mean of its divisors is an integer number (22122716).

Almost surely, 2^213712025 is an apocalyptic number.

213712025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213712025 is a deficient number, since it is larger than the sum of its proper divisors (51760567).

213712025 is a wasteful number, since it uses less digits than its factorization.

213712025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160 (or 15155 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 213712025 is about 14618.8927419282. The cubic root of 213712025 is about 597.8739802608.

Adding to 213712025 its reverse (520217312), we get a palindrome (733929337).

The spelling of 213712025 in words is "two hundred thirteen million, seven hundred twelve thousand, twenty-five".