20315325 has 24 divisors (see below), whose sum is σ = 35051328. Its totient is φ = 10362880.

The previous prime is 20315303. The next prime is 20315359. The reversal of 20315325 is 52351302.

It is not a de Polignac number, because 20315325 - 2⁸ = 20315069 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4164 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (1460472).

Almost surely, 2^20315325 is an apocalyptic number.

20315325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20315325 is a deficient number, since it is larger than the sum of its proper divisors (14736003).

20315325 is a wasteful number, since it uses less digits than its factorization.

20315325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11813 (or 11808 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 20315325 is about 4507.2524890447. The cubic root of 20315325 is about 272.8608691426.

Adding to 20315325 its reverse (52351302), we get a palindrome (72666627).

The spelling of 20315325 in words is "twenty million, three hundred fifteen thousand, three hundred twenty-five".