210131234440025 has 24 divisors (see below), whose sum is σ = 261538943405784. Its totient is φ = 167476130841600.

The previous prime is 210131234439967. The next prime is 210131234440031. The reversal of 210131234440025 is 520044432131012.

It can be written as a sum of positive squares in 12 ways, for example, as 53927755976704 + 156203478463321 = 7343552^2 + 12498139^2 .

It is not a de Polignac number, because 210131234440025 - 2²⁰ = 210131233391449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210131234439973 and 210131234440000.

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 23 ways as a sum of consecutive naturals, for example, 3198704 + ... + 20748353.

It is an arithmetic number, because the mean of its divisors is an integer number (10897455975241).

Almost surely, 2^{210131234440025} is an apocalyptic number.

210131234440025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

210131234440025 is a deficient number, since it is larger than the sum of its proper divisors (51407708965759).

210131234440025 is a wasteful number, since it uses less digits than its factorization.

210131234440025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23948381 (or 23948376 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 210131234440025 its reverse (520044432131012), we get a palindrome (730175666571037).

The spelling of 210131234440025 in words is "two hundred ten trillion, one hundred thirty-one billion, two hundred thirty-four million, four hundred forty thousand, twenty-five".