20125000 has 112 divisors (see below), whose sum is σ = 56249280. Its totient is φ = 6600000.

The previous prime is 20124953. The next prime is 20125019. The reversal of 20125000 is 52102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 874989 + ... + 875011.

Almost surely, 2^20125000 is an apocalyptic number.

20125000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20125000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28124640).

20125000 is an abundant number, since it is smaller than the sum of its proper divisors (36124280).

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

20125000 is an frugal number, since it uses more digits than its factorization.

20125000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 37 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 10.

The square root of 20125000 is about 4486.0896112316. The cubic root of 20125000 is about 272.0060912707.

Adding to 20125000 its reverse (52102), we get a palindrome (20177102).

The spelling of 20125000 in words is "twenty million, one hundred twenty-five thousand".