10212500025209 has 2 divisors, whose sum is σ = 10212500025210. Its totient is φ = 10212500025208.

The previous prime is 10212500025197. The next prime is 10212500025271. The reversal of 10212500025209 is 90252000521201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7900579775209 + 2311920250000 = 2810797^2 + 1520500^2 .

It is an emirp because it is prime and its reverse (90252000521201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10212500025209 - 2³² = 10208205057913 is a prime.

It is not a weakly prime, because it can be changed into another prime (10212505025209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106250012604 + 5106250012605.

It is an arithmetic number, because the mean of its divisors is an integer number (5106250012605).

Almost surely, 2^{10212500025209} is an apocalyptic number.

It is an amenable number.

10212500025209 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212500025209 is an equidigital number, since it uses as much as digits as its factorization.

10212500025209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 29.

The spelling of 10212500025209 in words is "ten trillion, two hundred twelve billion, five hundred million, twenty-five thousand, two hundred nine".