20471325 has 24 divisors (see below), whose sum is σ = 38682048. Its totient is φ = 9358080.

The previous prime is 20471291. The next prime is 20471327. The reversal of 20471325 is 52317402.

It is not a de Polignac number, because 20471325 - 2⁶ = 20471261 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20471295 and 20471304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20471327) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 18972 + ... + 20021.

It is an arithmetic number, because the mean of its divisors is an integer number (1611752).

Almost surely, 2^20471325 is an apocalyptic number.

20471325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20471325 is a deficient number, since it is larger than the sum of its proper divisors (18210723).

20471325 is a wasteful number, since it uses less digits than its factorization.

20471325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39013 (or 39008 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20471325 is about 4524.5248369304. The cubic root of 20471325 is about 273.5575156966.

Adding to 20471325 its reverse (52317402), we get a palindrome (72788727).

The spelling of 20471325 in words is "twenty million, four hundred seventy-one thousand, three hundred twenty-five".