20855325 has 12 divisors (see below), whose sum is σ = 34480928. Its totient is φ = 11122800.

The previous prime is 20855287. The next prime is 20855333. The reversal of 20855325 is 52355802.

It is not a de Polignac number, because 20855325 - 2¹³ = 20847133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20855292 and 20855301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138961 + ... + 139110.

Almost surely, 2^20855325 is an apocalyptic number.

20855325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20855325 is a deficient number, since it is larger than the sum of its proper divisors (13625603).

20855325 is a wasteful number, since it uses less digits than its factorization.

20855325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278084 (or 278079 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 20855325 is about 4566.7630768412. The cubic root of 20855325 is about 275.2573898714.

The spelling of 20855325 in words is "twenty million, eight hundred fifty-five thousand, three hundred twenty-five".