20125115425 has 12 divisors (see below), whose sum is σ = 25364245756. Its totient is φ = 15836155200.

The previous prime is 20125115411. The next prime is 20125115467. The reversal of 20125115425 is 52451152102.

It can be written as a sum of positive squares in 6 ways, for example, as 4048904161 + 16076211264 = 63631^2 + 126792^2 .

It is not a de Polignac number, because 20125115425 - 2¹⁵ = 20125082657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20125115393 and 20125115402.

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, 6596874 + ... + 6599923.

Almost surely, 2^20125115425 is an apocalyptic number.

20125115425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125115425 is a deficient number, since it is larger than the sum of its proper divisors (5239130331).

20125115425 is a wasteful number, since it uses less digits than its factorization.

20125115425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13196868 (or 13196863 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 20125115425 its reverse (52451152102), we get a palindrome (72576267527).

The spelling of 20125115425 in words is "twenty billion, one hundred twenty-five million, one hundred fifteen thousand, four hundred twenty-five".