235425221 has 2 divisors, whose sum is σ = 235425222. Its totient is φ = 235425220.

The previous prime is 235425193. The next prime is 235425227. The reversal of 235425221 is 122524532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214622500 + 20802721 = 14650^2 + 4561^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-235425221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (235425227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117712610 + 117712611.

It is an arithmetic number, because the mean of its divisors is an integer number (117712611).

Almost surely, 2^235425221 is an apocalyptic number.

It is an amenable number.

235425221 is a deficient number, since it is larger than the sum of its proper divisors (1).

235425221 is an equidigital number, since it uses as much as digits as its factorization.

235425221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 26.

The square root of 235425221 is about 15343.5726283027. The cubic root of 235425221 is about 617.4725594411.

Adding to 235425221 its reverse (122524532), we get a palindrome (357949753).

The spelling of 235425221 in words is "two hundred thirty-five million, four hundred twenty-five thousand, two hundred twenty-one".