20325445 has 24 divisors (see below), whose sum is σ = 29614464. Its totient is φ = 13327776.

The previous prime is 20325443. The next prime is 20325451. The reversal of 20325445 is 54452302.

It is not a de Polignac number, because 20325445 - 2¹ = 20325443 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 23 ways as a sum of consecutive naturals, for example, 3832 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (1233936).

Almost surely, 2^20325445 is an apocalyptic number.

It is an amenable number.

20325445 is a deficient number, since it is larger than the sum of its proper divisors (9289019).

20325445 is a wasteful number, since it uses less digits than its factorization.

20325445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649 (or 3642 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 20325445 is about 4508.3749844040. The cubic root of 20325445 is about 272.9061698143.

Adding to 20325445 its reverse (54452302), we get a palindrome (74777747).

The spelling of 20325445 in words is "twenty million, three hundred twenty-five thousand, four hundred forty-five".