20437206125 has 32 divisors (see below), whose sum is σ = 29198707200. Its totient is φ = 13990329600.

The previous prime is 20437206073. The next prime is 20437206137. The reversal of 20437206125 is 52160273402.

It is not a de Polignac number, because 20437206125 - 2²⁰ = 20436157549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20437206091 and 20437206100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 504629 + ... + 543621.

It is an arithmetic number, because the mean of its divisors is an integer number (912459600).

Almost surely, 2^20437206125 is an apocalyptic number.

20437206125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20437206125 is a deficient number, since it is larger than the sum of its proper divisors (8761501075).

20437206125 is an equidigital number, since it uses as much as digits as its factorization.

20437206125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39614 (or 39604 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 20437206125 its reverse (52160273402), we get a palindrome (72597479527).

The spelling of 20437206125 in words is "twenty billion, four hundred thirty-seven million, two hundred six thousand, one hundred twenty-five".