11381725109 has 2 divisors, whose sum is σ = 11381725110. Its totient is φ = 11381725108.

The previous prime is 11381725093. The next prime is 11381725127. The reversal of 11381725109 is 90152718311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11360362225 + 21362884 = 106585^2 + 4622^2 .

It is a cyclic number.

It is not a de Polignac number, because 11381725109 - 2⁴ = 11381725093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11381725129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690862554 + 5690862555.

It is an arithmetic number, because the mean of its divisors is an integer number (5690862555).

Almost surely, 2^11381725109 is an apocalyptic number.

It is an amenable number.

11381725109 is a deficient number, since it is larger than the sum of its proper divisors (1).

11381725109 is an equidigital number, since it uses as much as digits as its factorization.

11381725109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 38.

The spelling of 11381725109 in words is "eleven billion, three hundred eighty-one million, seven hundred twenty-five thousand, one hundred nine".