20437005325 has 12 divisors (see below), whose sum is σ = 27645694848. Its totient is φ = 14863276400.

The previous prime is 20437005307. The next prime is 20437005349. The reversal of 20437005325 is 52350073402.

It is not a de Polignac number, because 20437005325 - 2²¹ = 20434908173 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 37157917 + ... + 37158466.

It is an arithmetic number, because the mean of its divisors is an integer number (2303807904).

Almost surely, 2^20437005325 is an apocalyptic number.

20437005325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20437005325 is a deficient number, since it is larger than the sum of its proper divisors (7208689523).

20437005325 is a wasteful number, since it uses less digits than its factorization.

20437005325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74316404 (or 74316399 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 31.

Adding to 20437005325 its reverse (52350073402), we get a palindrome (72787078727).

The spelling of 20437005325 in words is "twenty billion, four hundred thirty-seven million, five thousand, three hundred twenty-five".