20125125 has 64 divisors (see below), whose sum is σ = 38188800. Its totient is φ = 10454400.

The previous prime is 20125117. The next prime is 20125153. The reversal of 20125125 is 52152102.

It is not a de Polignac number, because 20125125 - 2³ = 20125117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20125098 and 20125107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226081 + ... + 226169.

It is an arithmetic number, because the mean of its divisors is an integer number (596700).

Almost surely, 2^20125125 is an apocalyptic number.

20125125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20125125 is a deficient number, since it is larger than the sum of its proper divisors (18063675).

20125125 is an equidigital number, since it uses as much as digits as its factorization.

20125125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180 (or 164 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 20125125 is about 4486.1035431653. The cubic root of 20125125 is about 272.0066544292.

Adding to 20125125 its reverse (52152102), we get a palindrome (72277227).

The spelling of 20125125 in words is "twenty million, one hundred twenty-five thousand, one hundred twenty-five".