210630443105125 has 16 divisors (see below), whose sum is σ = 263149749860400. Its totient is φ = 168322971878400.

The previous prime is 210630443105113. The next prime is 210630443105143. The reversal of 210630443105125 is 521501344036012.

It can be written as a sum of positive squares in 8 ways, for example, as 173228583226689 + 37401859878436 = 13161633^2 + 6115706^2 .

It is not a de Polignac number, because 210630443105125 - 2³¹ = 210628295621477 is a prime.

It is a super-2 number, since 2×210630443105125² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 906796440 + ... + 907028689.

It is an arithmetic number, because the mean of its divisors is an integer number (16446859366275).

Almost surely, 2^{210630443105125} is an apocalyptic number.

210630443105125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210630443105125 is a deficient number, since it is larger than the sum of its proper divisors (52519306755275).

210630443105125 is an equidigital number, since it uses as much as digits as its factorization.

210630443105125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813826073 (or 1813826063 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The spelling of 210630443105125 in words is "two hundred ten trillion, six hundred thirty billion, four hundred forty-three million, one hundred five thousand, one hundred twenty-five".