2550525221 has 2 divisors, whose sum is σ = 2550525222. Its totient is φ = 2550525220.

The previous prime is 2550525209. The next prime is 2550525277. The reversal of 2550525221 is 1225250552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1361241025 + 1189284196 = 36895^2 + 34486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2550525221 is a prime.

It is a congruent number.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275262610 + 1275262611.

It is an arithmetic number, because the mean of its divisors is an integer number (1275262611).

Almost surely, 2^2550525221 is an apocalyptic number.

It is an amenable number.

2550525221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2550525221 is an equidigital number, since it uses as much as digits as its factorization.

2550525221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10000, while the sum is 29.

The square root of 2550525221 is about 50502.7248868811. The cubic root of 2550525221 is about 1366.2909997080.

Adding to 2550525221 its reverse (1225250552), we get a palindrome (3775775773).

The spelling of 2550525221 in words is "two billion, five hundred fifty million, five hundred twenty-five thousand, two hundred twenty-one".