20123425 has 24 divisors (see below), whose sum is σ = 29016000. Its totient is φ = 13558080.

The previous prime is 20123417. The next prime is 20123431. The reversal of 20123425 is 52432102.

It is not a de Polignac number, because 20123425 - 2³ = 20123417 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9351 + ... + 11299.

It is an arithmetic number, because the mean of its divisors is an integer number (1209000).

Almost surely, 2^20123425 is an apocalyptic number.

20123425 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20123425 is a deficient number, since it is larger than the sum of its proper divisors (8892575).

20123425 is a wasteful number, since it uses less digits than its factorization.

20123425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2020 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20123425 is about 4485.9140651600. The cubic root of 20123425 is about 271.9989952745.

Adding to 20123425 its reverse (52432102), we get a palindrome (72555527).

The spelling of 20123425 in words is "twenty million, one hundred twenty-three thousand, four hundred twenty-five".