20216325 has 24 divisors (see below), whose sum is σ = 33761728. Its totient is φ = 10673280.

The previous prime is 20216311. The next prime is 20216341. The reversal of 20216325 is 52361202.

It is not a de Polignac number, because 20216325 - 2⁸ = 20216069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6417 + ... + 9033.

Almost surely, 2^20216325 is an apocalyptic number.

20216325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20216325 is a deficient number, since it is larger than the sum of its proper divisors (13545403).

20216325 is a wasteful number, since it uses less digits than its factorization.

20216325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2733 (or 2728 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20216325 is about 4496.2567764753. The cubic root of 20216325 is about 272.4169148826.

Adding to 20216325 its reverse (52361202), we get a palindrome (72577527).

The spelling of 20216325 in words is "twenty million, two hundred sixteen thousand, three hundred twenty-five".