32625221 has 2 divisors, whose sum is σ = 32625222. Its totient is φ = 32625220.

The previous prime is 32625209. The next prime is 32625253. The reversal of 32625221 is 12252623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 4056196 = 5345^2 + 2014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32625221 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32625421) 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 as a sum of consecutive naturals, namely, 16312610 + 16312611.

It is an arithmetic number, because the mean of its divisors is an integer number (16312611).

Almost surely, 2^32625221 is an apocalyptic number.

It is an amenable number.

32625221 is a deficient number, since it is larger than the sum of its proper divisors (1).

32625221 is an equidigital number, since it uses as much as digits as its factorization.

32625221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 32625221 is about 5711.8491751796. The cubic root of 32625221 is about 319.5345479200.

Adding to 32625221 its reverse (12252623), we get a palindrome (44877844).

The spelling of 32625221 in words is "thirty-two million, six hundred twenty-five thousand, two hundred twenty-one".