3025028921 has 4 divisors (see below), whose sum is σ = 3059018100. Its totient is φ = 2991039744.

The previous prime is 3025028917. The next prime is 3025028953. The reversal of 3025028921 is 1298205203.

It is a happy number.

3025028921 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: 1298205203 = 5413 ⋅239831.

It can be written as a sum of positive squares in 2 ways, for example, as 1681000000 + 1344028921 = 41000^2 + 36661^2 .

It is a cyclic number.

It is not a de Polignac number, because 3025028921 - 2² = 3025028917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3025028521) 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, 16994456 + ... + 16994633.

It is an arithmetic number, because the mean of its divisors is an integer number (764754525).

Almost surely, 2^3025028921 is an apocalyptic number.

It is an amenable number.

3025028921 is a deficient number, since it is larger than the sum of its proper divisors (33989179).

3025028921 is an equidigital number, since it uses as much as digits as its factorization.

3025028921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33989178.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 3025028921 is about 55000.2629175534. The cubic root of 3025028921 is about 1446.2493508851.

The spelling of 3025028921 in words is "three billion, twenty-five million, twenty-eight thousand, nine hundred twenty-one".