11164640425 has 6 divisors (see below), whose sum is σ = 13844154158. Its totient is φ = 8931712320.

The previous prime is 11164640419. The next prime is 11164640497. The reversal of 11164640425 is 52404646111.

It can be written as a sum of positive squares in 3 ways, for example, as 117158976 + 11047481449 = 10824^2 + 105107^2 .

It is not a de Polignac number, because 11164640425 - 2⁵ = 11164640393 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223292784 + ... + 223292833.

Almost surely, 2^11164640425 is an apocalyptic number.

It is an amenable number.

11164640425 is a deficient number, since it is larger than the sum of its proper divisors (2679513733).

11164640425 is an equidigital number, since it uses as much as digits as its factorization.

11164640425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446585627 (or 446585622 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The spelling of 11164640425 in words is "eleven billion, one hundred sixty-four million, six hundred forty thousand, four hundred twenty-five".