20415325 has 24 divisors (see below), whose sum is σ = 29615168. Its totient is φ = 13668480.

The previous prime is 20415319. The next prime is 20415341. The reversal of 20415325 is 52351402.

It is not a de Polignac number, because 20415325 - 2⁵ = 20415293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20415296 and 20415305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6169 + ... + 8881.

Almost surely, 2^20415325 is an apocalyptic number.

20415325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20415325 is a deficient number, since it is larger than the sum of its proper divisors (9199843).

20415325 is a wasteful number, since it uses less digits than its factorization.

20415325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773 (or 2768 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20415325 is about 4518.3321037746. The cubic root of 20415325 is about 273.3078459611.

Adding to 20415325 its reverse (52351402), we get a palindrome (72766727).

The spelling of 20415325 in words is "twenty million, four hundred fifteen thousand, three hundred twenty-five".