20125308 has 24 divisors (see below), whose sum is σ = 53667712. Its totient is φ = 5750064.

The previous prime is 20125307. The next prime is 20125321. The reversal of 20125308 is 80352102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125307) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 119710 + ... + 119877.

Almost surely, 2^20125308 is an apocalyptic number.

20125308 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20125308 is an abundant number, since it is smaller than the sum of its proper divisors (33542404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20125308 is a wasteful number, since it uses less digits than its factorization.

20125308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239601 (or 239599 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20125308 is about 4486.1239394381. The cubic root of 20125308 is about 272.0074788889.

The spelling of 20125308 in words is "twenty million, one hundred twenty-five thousand, three hundred eight".