11153121025 has 6 divisors (see below), whose sum is σ = 13829870102. Its totient is φ = 8922496800.

The previous prime is 11153121019. The next prime is 11153121029. The reversal of 11153121025 is 52012135111.

It can be written as a sum of positive squares in 3 ways, for example, as 895685184 + 10257435841 = 29928^2 + 101279^2 .

It is not a de Polignac number, because 11153121025 - 2³ = 11153121017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11153120987 and 11153121005.

It is not an unprimeable number, because it can be changed into a prime (11153121029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223062396 + ... + 223062445.

Almost surely, 2^11153121025 is an apocalyptic number.

It is an amenable number.

11153121025 is a deficient number, since it is larger than the sum of its proper divisors (2676749077).

11153121025 is an equidigital number, since it uses as much as digits as its factorization.

11153121025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446124851 (or 446124846 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 22.

Adding to 11153121025 its reverse (52012135111), we get a palindrome (63165256136).

The spelling of 11153121025 in words is "eleven billion, one hundred fifty-three million, one hundred twenty-one thousand, twenty-five".