11145531425 has 18 divisors (see below), whose sum is σ = 16076862198. Its totient is φ = 7642649280.

The previous prime is 11145531409. The next prime is 11145531431. The reversal of 11145531425 is 52413554111.

It can be written as a sum of positive squares in 3 ways, for example, as 167521249 + 10978010176 = 12943^2 + 104776^2 .

It is not a de Polignac number, because 11145531425 - 2⁴ = 11145531409 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11145531391 and 11145531400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4547972 + ... + 4550421.

It is an arithmetic number, because the mean of its divisors is an integer number (893159011).

Almost surely, 2^11145531425 is an apocalyptic number.

It is an amenable number.

11145531425 is a deficient number, since it is larger than the sum of its proper divisors (4931330773).

11145531425 is an equidigital number, since it uses as much as digits as its factorization.

11145531425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9098417 (or 9098405 counting only the distinct ones).

The product of its digits is 12000, while the sum is 32.

The spelling of 11145531425 in words is "eleven billion, one hundred forty-five million, five hundred thirty-one thousand, four hundred twenty-five".