230025721 has 2 divisors, whose sum is σ = 230025722. Its totient is φ = 230025720.

The previous prime is 230025667. The next prime is 230025727. The reversal of 230025721 is 127520032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 175191696 + 54834025 = 13236^2 + 7405^2 .

It is a cyclic number.

It is not a de Polignac number, because 230025721 - 2⁹ = 230025209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 230025692 and 230025701.

It is not a weakly prime, because it can be changed into another prime (230025727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115012860 + 115012861.

It is an arithmetic number, because the mean of its divisors is an integer number (115012861).

Almost surely, 2^230025721 is an apocalyptic number.

It is an amenable number.

230025721 is a deficient number, since it is larger than the sum of its proper divisors (1).

230025721 is an equidigital number, since it uses as much as digits as its factorization.

230025721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 230025721 is about 15166.5988606543. The cubic root of 230025721 is about 612.7154058969.

Adding to 230025721 its reverse (127520032), we get a palindrome (357545753).

The spelling of 230025721 in words is "two hundred thirty million, twenty-five thousand, seven hundred twenty-one".