20125425 has 48 divisors (see below), whose sum is σ = 34872768. Its totient is φ = 10233600.

The previous prime is 20125411. The next prime is 20125439. The reversal of 20125425 is 52452102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20125411) and next prime (20125439).

It is not a de Polignac number, because 20125425 - 2¹¹ = 20123377 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 242434 + ... + 242516.

It is an arithmetic number, because the mean of its divisors is an integer number (726516).

Almost surely, 2^20125425 is an apocalyptic number.

20125425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125425 is a deficient number, since it is larger than the sum of its proper divisors (14747343).

20125425 is a wasteful number, since it uses less digits than its factorization.

20125425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 20125425 is about 4486.1369796296. The cubic root of 20125425 is about 272.0080059999.

Adding to 20125425 its reverse (52452102), we get a palindrome (72577527).

The spelling of 20125425 in words is "twenty million, one hundred twenty-five thousand, four hundred twenty-five".