213625999 has 2 divisors, whose sum is σ = 213626000. Its totient is φ = 213625998.

The previous prime is 213625969. The next prime is 213626011. The reversal of 213625999 is 999526312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213625999 - 2⁷ = 213625871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213625969) by changing a digit.

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 as a sum of consecutive naturals, namely, 106812999 + 106813000.

It is an arithmetic number, because the mean of its divisors is an integer number (106813000).

Almost surely, 2^213625999 is an apocalyptic number.

213625999 is a deficient number, since it is larger than the sum of its proper divisors (1).

213625999 is an equidigital number, since it uses as much as digits as its factorization.

213625999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 46.

The square root of 213625999 is about 14615.9501572768. The cubic root of 213625999 is about 597.7937482918.

The spelling of 213625999 in words is "two hundred thirteen million, six hundred twenty-five thousand, nine hundred ninety-nine".