325155021 has 4 divisors (see below), whose sum is σ = 433540032. Its totient is φ = 216770012.

The previous prime is 325155011. The next prime is 325155119. The reversal of 325155021 is 120551523.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 325155021 - 2⁹ = 325154509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 325154982 and 325155000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (325155011) 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, 54192501 + ... + 54192506.

It is an arithmetic number, because the mean of its divisors is an integer number (108385008).

Almost surely, 2^325155021 is an apocalyptic number.

It is an amenable number.

325155021 is a deficient number, since it is larger than the sum of its proper divisors (108385011).

325155021 is a wasteful number, since it uses less digits than its factorization.

325155021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108385010.

The product of its (nonzero) digits is 1500, while the sum is 24.

The square root of 325155021 is about 18032.0553736949. The cubic root of 325155021 is about 687.6437313153.

The spelling of 325155021 in words is "three hundred twenty-five million, one hundred fifty-five thousand, twenty-one".