20325413 has 4 divisors (see below), whose sum is σ = 20339628. Its totient is φ = 20311200.

The previous prime is 20325401. The next prime is 20325443. The reversal of 20325413 is 31452302.

It is a happy number.

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 9840769 + 10484644 = 3137^2 + 3238^2 .

It is a cyclic number.

It is not a de Polignac number, because 20325413 - 2¹⁸ = 20063269 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 (20325443) 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, 4688 + ... + 7913.

It is an arithmetic number, because the mean of its divisors is an integer number (5084907).

Almost surely, 2^20325413 is an apocalyptic number.

It is an amenable number.

20325413 is a deficient number, since it is larger than the sum of its proper divisors (14215).

20325413 is a wasteful number, since it uses less digits than its factorization.

20325413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14214.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20325413 is about 4508.3714354521. The cubic root of 20325413 is about 272.9060265947.

Adding to 20325413 its reverse (31452302), we get a palindrome (51777715).

The spelling of 20325413 in words is "twenty million, three hundred twenty-five thousand, four hundred thirteen".