20213325 has 36 divisors (see below), whose sum is σ = 39500448. Its totient is φ = 9799200.

The previous prime is 20213317. The next prime is 20213351. The reversal of 20213325 is 52331202.

It is not a de Polignac number, because 20213325 - 2³ = 20213317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213298 and 20213307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1609 + ... + 6558.

Almost surely, 2^20213325 is an apocalyptic number.

20213325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20213325 is a deficient number, since it is larger than the sum of its proper divisors (19287123).

20213325 is a wasteful number, since it uses less digits than its factorization.

20213325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8194 (or 8186 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20213325 is about 4495.9231532578. The cubic root of 20213325 is about 272.4034391203.

Adding to 20213325 its reverse (52331202), we get a palindrome (72544527).

The spelling of 20213325 in words is "twenty million, two hundred thirteen thousand, three hundred twenty-five".