190825899709 has 2 divisors, whose sum is σ = 190825899710. Its totient is φ = 190825899708.

The previous prime is 190825899637. The next prime is 190825899751. The reversal of 190825899709 is 907998528091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184022124484 + 6803775225 = 428978^2 + 82485^2 .

It is a cyclic number.

It is not a de Polignac number, because 190825899709 - 2²⁷ = 190691681981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190825899109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95412949854 + 95412949855.

It is an arithmetic number, because the mean of its divisors is an integer number (95412949855).

Almost surely, 2^190825899709 is an apocalyptic number.

It is an amenable number.

190825899709 is a deficient number, since it is larger than the sum of its proper divisors (1).

190825899709 is an equidigital number, since it uses as much as digits as its factorization.

190825899709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 67.

The spelling of 190825899709 in words is "one hundred ninety billion, eight hundred twenty-five million, eight hundred ninety-nine thousand, seven hundred nine".