6421225141 has 2 divisors, whose sum is σ = 6421225142. Its totient is φ = 6421225140.

The previous prime is 6421225103. The next prime is 6421225241. The reversal of 6421225141 is 1415221246.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5469194116 + 952031025 = 73954^2 + 30855^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6421225141 is a prime.

It is a super-2 number, since 2×6421225141² = 82464264622820939762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6421225241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210612570 + 3210612571.

It is an arithmetic number, because the mean of its divisors is an integer number (3210612571).

Almost surely, 2^6421225141 is an apocalyptic number.

It is an amenable number.

6421225141 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421225141 is an equidigital number, since it uses as much as digits as its factorization.

6421225141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 28.

The square root of 6421225141 is about 80132.5473262893. The cubic root of 6421225141 is about 1858.6857348611.

Adding to 6421225141 its reverse (1415221246), we get a palindrome (7836446387).

The spelling of 6421225141 in words is "six billion, four hundred twenty-one million, two hundred twenty-five thousand, one hundred forty-one".