20245430125 has 8 divisors (see below), whose sum is σ = 25266296952. Its totient is φ = 16196344000.

The previous prime is 20245430099. The next prime is 20245430137. The reversal of 20245430125 is 52103454202.

It can be written as a sum of positive squares in 4 ways, for example, as 57851236 + 20187578889 = 7606^2 + 142083^2 .

It is not a de Polignac number, because 20245430125 - 2¹⁵ = 20245397357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20245430093 and 20245430102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80981596 + ... + 80981845.

It is an arithmetic number, because the mean of its divisors is an integer number (3158287119).

Almost surely, 2^20245430125 is an apocalyptic number.

20245430125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20245430125 is a deficient number, since it is larger than the sum of its proper divisors (5020866827).

20245430125 is an equidigital number, since it uses as much as digits as its factorization.

20245430125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161963456 (or 161963446 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20245430125 its reverse (52103454202), we get a palindrome (72348884327).

The spelling of 20245430125 in words is "twenty billion, two hundred forty-five million, four hundred thirty thousand, one hundred twenty-five".