210148825 has 12 divisors (see below), whose sum is σ = 260890668. Its totient is φ = 167921600.

The previous prime is 210148811. The next prime is 210148909. The reversal of 210148825 is 528841012.

It can be written as a sum of positive squares in 6 ways, for example, as 9048064 + 201100761 = 3008^2 + 14181^2 .

It is not a de Polignac number, because 210148825 - 2⁵ = 210148793 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19059 + ... + 27991.

It is an arithmetic number, because the mean of its divisors is an integer number (21740889).

Almost surely, 2^210148825 is an apocalyptic number.

210148825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210148825 is a deficient number, since it is larger than the sum of its proper divisors (50741843).

210148825 is an equidigital number, since it uses as much as digits as its factorization.

210148825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9884 (or 9879 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 210148825 is about 14496.5107870825. The cubic root of 210148825 is about 594.5325754821.

Adding to 210148825 its reverse (528841012), we get a palindrome (738989837).

The spelling of 210148825 in words is "two hundred ten million, one hundred forty-eight thousand, eight hundred twenty-five".