20438325 has 30 divisors (see below), whose sum is σ = 37862594. Its totient is φ = 10899360.

The previous prime is 20438311. The next prime is 20438371. The reversal of 20438325 is 52383402.

It can be written as a sum of positive squares in 3 ways, for example, as 1306449 + 19131876 = 1143^2 + 4374^2 .

It is not a de Polignac number, because 20438325 - 2¹⁰ = 20437301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 3022 + ... + 7071.

Almost surely, 2^20438325 is an apocalyptic number.

20438325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20438325 is a deficient number, since it is larger than the sum of its proper divisors (17424269).

20438325 is a wasteful number, since it uses less digits than its factorization.

20438325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10115 (or 10101 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 20438325 is about 4520.8765742940. The cubic root of 20438325 is about 273.4104440713.

The spelling of 20438325 in words is "twenty million, four hundred thirty-eight thousand, three hundred twenty-five".