9925191013 has 2 divisors, whose sum is σ = 9925191014. Its totient is φ = 9925191012.

The previous prime is 9925191011. The next prime is 9925191053. The reversal of 9925191013 is 3101915299.

It is an a-pointer prime, because the next prime (9925191053) can be obtained adding 9925191013 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9362884644 + 562306369 = 96762^2 + 23713^2 .

It is a cyclic number.

It is not a de Polignac number, because 9925191013 - 2¹ = 9925191011 is a prime.

Together with 9925191011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9925191011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4962595506 + 4962595507.

It is an arithmetic number, because the mean of its divisors is an integer number (4962595507).

Almost surely, 2^9925191013 is an apocalyptic number.

It is an amenable number.

9925191013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9925191013 is an equidigital number, since it uses as much as digits as its factorization.

9925191013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 40.

The square root of 9925191013 is about 99625.2528880103. The cubic root of 9925191013 is about 2149.0488681346.

The spelling of 9925191013 in words is "nine billion, nine hundred twenty-five million, one hundred ninety-one thousand, thirteen".