6325040021 has 2 divisors, whose sum is σ = 6325040022. Its totient is φ = 6325040020.

The previous prime is 6325040011. The next prime is 6325040047. The reversal of 6325040021 is 1200405236.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3707592100 + 2617447921 = 60890^2 + 51161^2 .

It is a cyclic number.

It is not a de Polignac number, because 6325040021 - 2³⁰ = 5251298197 is a prime.

It is a super-2 number, since 2×6325040021² = 80012262534503360882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6325040011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3162520010 + 3162520011.

It is an arithmetic number, because the mean of its divisors is an integer number (3162520011).

Almost surely, 2^6325040021 is an apocalyptic number.

It is an amenable number.

6325040021 is a deficient number, since it is larger than the sum of its proper divisors (1).

6325040021 is an equidigital number, since it uses as much as digits as its factorization.

6325040021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 6325040021 is about 79530.1202124076. The cubic root of 6325040021 is about 1849.3584355351.

Adding to 6325040021 its reverse (1200405236), we get a palindrome (7525445257).

The spelling of 6325040021 in words is "six billion, three hundred twenty-five million, forty thousand, twenty-one".