11425249891 has 16 divisors (see below), whose sum is σ = 13234542048. Its totient is φ = 9747865600.

The previous prime is 11425249859. The next prime is 11425249897. The reversal of 11425249891 is 19894252411.

It is not a de Polignac number, because 11425249891 - 2⁵ = 11425249859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11425249897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20530 + ... + 152551.

It is an arithmetic number, because the mean of its divisors is an integer number (827158878).

Almost surely, 2^11425249891 is an apocalyptic number.

11425249891 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11425249891 is a deficient number, since it is larger than the sum of its proper divisors (1809292157).

11425249891 is a wasteful number, since it uses less digits than its factorization.

11425249891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173462.

The product of its digits is 207360, while the sum is 46.

The spelling of 11425249891 in words is "eleven billion, four hundred twenty-five million, two hundred forty-nine thousand, eight hundred ninety-one".