325043505021 has 4 divisors (see below), whose sum is σ = 433391340032. Its totient is φ = 216695670012.

The previous prime is 325043505011. The next prime is 325043505023. The reversal of 325043505021 is 120505340523.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 325043505021 - 2¹⁰ = 325043503997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 325043505021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325043505023) 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, 54173917501 + ... + 54173917506.

It is an arithmetic number, because the mean of its divisors is an integer number (108347835008).

Almost surely, 2^325043505021 is an apocalyptic number.

It is an amenable number.

325043505021 is a deficient number, since it is larger than the sum of its proper divisors (108347835011).

325043505021 is a wasteful number, since it uses less digits than its factorization.

325043505021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108347835010.

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 325043505021 its reverse (120505340523), we get a palindrome (445548845544).

The spelling of 325043505021 in words is "three hundred twenty-five billion, forty-three million, five hundred five thousand, twenty-one".