213868325 has 24 divisors (see below), whose sum is σ = 297138720. Its totient is φ = 151329600.

The previous prime is 213868321. The next prime is 213868327. The reversal of 213868325 is 523868312.

It is not a de Polignac number, because 213868325 - 2² = 213868321 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213868321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335 + ... + 20684.

It is an arithmetic number, because the mean of its divisors is an integer number (12380780).

Almost surely, 2^213868325 is an apocalyptic number.

213868325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213868325 is a deficient number, since it is larger than the sum of its proper divisors (83270395).

213868325 is a wasteful number, since it uses less digits than its factorization.

213868325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21077 (or 21072 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 213868325 is about 14624.2375869650. The cubic root of 213868325 is about 598.0196980495.

The spelling of 213868325 in words is "two hundred thirteen million, eight hundred sixty-eight thousand, three hundred twenty-five".