210450125 has 8 divisors (see below), whose sum is σ = 262641912. Its totient is φ = 168360000.

The previous prime is 210450101. The next prime is 210450143. The reversal of 210450125 is 521054012.

It can be written as a sum of positive squares in 4 ways, for example, as 55547209 + 154902916 = 7453^2 + 12446^2 .

It is a de Polignac number, because none of the positive numbers 2^k-210450125 is a prime.

It is a super-2 number, since 2×210450125² = 88578510225031250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210450097 and 210450106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841676 + ... + 841925.

It is an arithmetic number, because the mean of its divisors is an integer number (32830239).

Almost surely, 2^210450125 is an apocalyptic number.

210450125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210450125 is a deficient number, since it is larger than the sum of its proper divisors (52191787).

210450125 is an equidigital number, since it uses as much as digits as its factorization.

210450125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683616 (or 1683606 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 210450125 is about 14506.8992207156. The cubic root of 210450125 is about 594.8165759960.

The spelling of 210450125 in words is "two hundred ten million, four hundred fifty thousand, one hundred twenty-five".