20352434225 has 12 divisors (see below), whose sum is σ = 25613692464. Its totient is φ = 16038931920.

The previous prime is 20352434209. The next prime is 20352434339. The reversal of 20352434225 is 52243425302.

It is not a de Polignac number, because 20352434225 - 2⁴ = 20352434209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20352434191 and 20352434200.

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, 6073679 + ... + 6077028.

It is an arithmetic number, because the mean of its divisors is an integer number (2134474372).

Almost surely, 2^20352434225 is an apocalyptic number.

20352434225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20352434225 is a deficient number, since it is larger than the sum of its proper divisors (5261258239).

20352434225 is a wasteful number, since it uses less digits than its factorization.

20352434225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12150784 (or 12150779 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 32.

Adding to 20352434225 its reverse (52243425302), we get a palindrome (72595859527).

The spelling of 20352434225 in words is "twenty billion, three hundred fifty-two million, four hundred thirty-four thousand, two hundred twenty-five".