325345225021 has 4 divisors (see below), whose sum is σ = 344483179452. Its totient is φ = 306207270592.

The previous prime is 325345225013. The next prime is 325345225033. The reversal of 325345225021 is 120522543523.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 260905402521 + 64439822500 = 510789^2 + 253850^2 .

It is a cyclic number.

It is not a de Polignac number, because 325345225021 - 2³ = 325345225013 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 (325345225721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9568977190 + ... + 9568977223.

It is an arithmetic number, because the mean of its divisors is an integer number (86120794863).

Almost surely, 2^325345225021 is an apocalyptic number.

It is an amenable number.

325345225021 is a deficient number, since it is larger than the sum of its proper divisors (19137954431).

325345225021 is a wasteful number, since it uses less digits than its factorization.

325345225021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19137954430.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 325345225021 its reverse (120522543523), we get a palindrome (445867768544).

The spelling of 325345225021 in words is "three hundred twenty-five billion, three hundred forty-five million, two hundred twenty-five thousand, twenty-one".