2500230221 has 2 divisors, whose sum is σ = 2500230222. Its totient is φ = 2500230220.

The previous prime is 2500230211. The next prime is 2500230233. The reversal of 2500230221 is 1220320052.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2400510025 + 99720196 = 48995^2 + 9986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2500230221 - 2¹⁰ = 2500229197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2500230221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2500230211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1250115110 + 1250115111.

It is an arithmetic number, because the mean of its divisors is an integer number (1250115111).

Almost surely, 2^2500230221 is an apocalyptic number.

It is an amenable number.

2500230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2500230221 is an equidigital number, since it uses as much as digits as its factorization.

2500230221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 2500230221 is about 50002.3021570007. The cubic root of 2500230221 is about 1357.2504680812.

Adding to 2500230221 its reverse (1220320052), we get a palindrome (3720550273).

The spelling of 2500230221 in words is "two billion, five hundred million, two hundred thirty thousand, two hundred twenty-one".