3425519221 has 4 divisors (see below), whose sum is σ = 3427161100. Its totient is φ = 3423877344.

The previous prime is 3425519219. The next prime is 3425519239. The reversal of 3425519221 is 1229155243.

3425519221 = 41385² + 41386².

3425519221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1229155243 = 19121 ⋅64283.

It can be written as a sum of positive squares in 2 ways, for example, as 1712800996 + 1712718225 = 41386^2 + 41385^2 .

It is a cyclic number.

It is not a de Polignac number, because 3425519221 - 2¹ = 3425519219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3425519521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 817806 + ... + 821983.

It is an arithmetic number, because the mean of its divisors is an integer number (856790275).

Almost surely, 2^3425519221 is an apocalyptic number.

3425519221 is the 41386-th centered square number.

It is an amenable number.

3425519221 is a deficient number, since it is larger than the sum of its proper divisors (1641879).

3425519221 is a wasteful number, since it uses less digits than its factorization.

3425519221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641878.

The product of its digits is 21600, while the sum is 34.

The square root of 3425519221 is about 58527.9353898632. The cubic root of 3425519221 is about 1507.4472930628.

The spelling of 3425519221 in words is "three billion, four hundred twenty-five million, five hundred nineteen thousand, two hundred twenty-one".