20124324225 has 18 divisors (see below), whose sum is σ = 36044901126. Its totient is φ = 10732972800.

The previous prime is 20124324211. The next prime is 20124324301. The reversal of 20124324225 is 52242342102.

20124324225 is a `hidden beast` number, since 2 + 0 + 1 + 2 + 432 + 4 + 225 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 100942209 + 20023382016 = 10047^2 + 141504^2 .

It is not a de Polignac number, because 20124324225 - 2⁷ = 20124324097 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 44720496 + ... + 44720945.

It is an arithmetic number, because the mean of its divisors is an integer number (2002494507).

Almost surely, 2^20124324225 is an apocalyptic number.

20124324225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20124324225 is a deficient number, since it is larger than the sum of its proper divisors (15920576901).

20124324225 is a wasteful number, since it uses less digits than its factorization.

20124324225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89441457 (or 89441449 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20124324225 its reverse (52242342102), we get a palindrome (72366666327).

The spelling of 20124324225 in words is "twenty billion, one hundred twenty-four million, three hundred twenty-four thousand, two hundred twenty-five".