6421225241 has 2 divisors, whose sum is σ = 6421225242. Its totient is φ = 6421225240.

The previous prime is 6421225141. The next prime is 6421225247. The reversal of 6421225241 is 1425221246.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6339503641 + 81721600 = 79621^2 + 9040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6421225241 is a prime.

It is not a weakly prime, because it can be changed into another prime (6421225247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3210612620 + 3210612621.

It is an arithmetic number, because the mean of its divisors is an integer number (3210612621).

Almost surely, 2^6421225241 is an apocalyptic number.

It is an amenable number.

6421225241 is a deficient number, since it is larger than the sum of its proper divisors (1).

6421225241 is an equidigital number, since it uses as much as digits as its factorization.

6421225241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 6421225241 is about 80132.5479502555. The cubic root of 6421225241 is about 1858.6857445097.

Adding to 6421225241 its reverse (1425221246), we get a palindrome (7846446487).

The spelling of 6421225241 in words is "six billion, four hundred twenty-one million, two hundred twenty-five thousand, two hundred forty-one".