20413325 has 12 divisors (see below), whose sum is σ = 25379328. Its totient is φ = 16287600.

The previous prime is 20413291. The next prime is 20413331. The reversal of 20413325 is 52331402.

It is a happy number.

It is not a de Polignac number, because 20413325 - 2⁸ = 20413069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20413297 and 20413306.

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, 11444 + ... + 13106.

It is an arithmetic number, because the mean of its divisors is an integer number (2114944).

Almost surely, 2^20413325 is an apocalyptic number.

20413325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20413325 is a deficient number, since it is larger than the sum of its proper divisors (4966003).

20413325 is a wasteful number, since it uses less digits than its factorization.

20413325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164 (or 2159 counting only the distinct ones).

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

The square root of 20413325 is about 4518.1107777477. The cubic root of 20413325 is about 273.2989207453.

Adding to 20413325 its reverse (52331402), we get a palindrome (72744727).

The spelling of 20413325 in words is "twenty million, four hundred thirteen thousand, three hundred twenty-five".