213025251 has 8 divisors (see below), whose sum is σ = 284101200. Its totient is φ = 141983072.

The previous prime is 213025247. The next prime is 213025259. The reversal of 213025251 is 152520312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213025251 - 2² = 213025247 is a prime.

It is a super-2 number, since 2×213025251² = 90759515127226002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213025259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19381 + ... + 28313.

It is an arithmetic number, because the mean of its divisors is an integer number (35512650).

Almost surely, 2^213025251 is an apocalyptic number.

213025251 is a deficient number, since it is larger than the sum of its proper divisors (71075949).

213025251 is an equidigital number, since it uses as much as digits as its factorization.

213025251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16885.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 213025251 is about 14595.3845786947. The cubic root of 213025251 is about 597.2328606293.

Adding to 213025251 its reverse (152520312), we get a palindrome (365545563).

The spelling of 213025251 in words is "two hundred thirteen million, twenty-five thousand, two hundred fifty-one".