111540545425 has 6 divisors (see below), whose sum is σ = 138310276358. Its totient is φ = 89232436320.

The previous prime is 111540545411. The next prime is 111540545489. The reversal of 111540545425 is 524545045111.

It can be written as a sum of positive squares in 3 ways, for example, as 14516394256 + 97024151169 = 120484^2 + 311487^2 .

It is a de Polignac number, because none of the positive numbers 2^k-111540545425 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, 2230810884 + ... + 2230810933.

Almost surely, 2^111540545425 is an apocalyptic number.

It is an amenable number.

111540545425 is a deficient number, since it is larger than the sum of its proper divisors (26769730933).

111540545425 is an equidigital number, since it uses as much as digits as its factorization.

111540545425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461621827 (or 4461621822 counting only the distinct ones).

The product of its (nonzero) digits is 80000, while the sum is 37.

The spelling of 111540545425 in words is "one hundred eleven billion, five hundred forty million, five hundred forty-five thousand, four hundred twenty-five".