210125000 has 84 divisors (see below), whose sum is σ = 504778695. Its totient is φ = 82000000.

The previous prime is 210124979. The next prime is 210125029. The reversal of 210125000 is 521012.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 11 ways, for example, as 201469636 + 8655364 = 14194^2 + 2942^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=10250.

It is an unprimeable number.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 5124980 + ... + 5125020.

Almost surely, 2^210125000 is an apocalyptic number.

210125000 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 210125000

210125000 is an abundant number, since it is smaller than the sum of its proper divisors (294653695).

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

210125000 is an frugal number, since it uses more digits than its factorization.

210125000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 48 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 210125000 is about 14495.6890143242. The cubic root of 210125000 is about 594.5101068436.

Adding to 210125000 its reverse (521012), we get a palindrome (210646012).

It can be divided in two parts, 2 and 10125000, that multiplied together give a square (20250000 = 4500²).

The spelling of 210125000 in words is "two hundred ten million, one hundred twenty-five thousand".