3625595821 has 2 divisors, whose sum is σ = 3625595822. Its totient is φ = 3625595820.

The previous prime is 3625595741. The next prime is 3625595833. The reversal of 3625595821 is 1285955263.

3625595821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3171266596 + 454329225 = 56314^2 + 21315^2 .

It is an emirp because it is prime and its reverse (1285955263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3625595821 - 2¹³ = 3625587629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3625595851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1812797910 + 1812797911.

It is an arithmetic number, because the mean of its divisors is an integer number (1812797911).

Almost surely, 2^3625595821 is an apocalyptic number.

It is an amenable number.

3625595821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3625595821 is an equidigital number, since it uses as much as digits as its factorization.

3625595821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648000, while the sum is 46.

The square root of 3625595821 is about 60212.9207147436. The cubic root of 3625595821 is about 1536.2425714912.

The spelling of 3625595821 in words is "three billion, six hundred twenty-five million, five hundred ninety-five thousand, eight hundred twenty-one".