5425401221 has 2 divisors, whose sum is σ = 5425401222. Its totient is φ = 5425401220.

The previous prime is 5425401217. The next prime is 5425401257. The reversal of 5425401221 is 1221045245.

5425401221 is nontrivially palindromic in base 2.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3845736196 + 1579665025 = 62014^2 + 39745^2 .

It is a cyclic number.

It is not a de Polignac number, because 5425401221 - 2² = 5425401217 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5425401211) 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, 2712700610 + 2712700611.

It is an arithmetic number, because the mean of its divisors is an integer number (2712700611).

Almost surely, 2^5425401221 is an apocalyptic number.

It is an amenable number.

5425401221 is a deficient number, since it is larger than the sum of its proper divisors (1).

5425401221 is an equidigital number, since it uses as much as digits as its factorization.

5425401221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 5425401221 is about 73657.3229285453. The cubic root of 5425401221 is about 1757.1572157006.

Adding to 5425401221 its reverse (1221045245), we get a palindrome (6646446466).

The spelling of 5425401221 in words is "five billion, four hundred twenty-five million, four hundred one thousand, two hundred twenty-one".