11542251225 has 36 divisors (see below), whose sum is σ = 19450397456. Its totient is φ = 6039608640.

The previous prime is 11542251181. The next prime is 11542251239. The reversal of 11542251225 is 52215224511.

It is a de Polignac number, because none of the positive numbers 2^k-11542251225 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11542251192 and 11542251201.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 183282 + ... + 238068.

Almost surely, 2^11542251225 is an apocalyptic number.

11542251225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11542251225 is a deficient number, since it is larger than the sum of its proper divisors (7908146231).

11542251225 is an equidigital number, since it uses as much as digits as its factorization.

11542251225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54906 (or 54848 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

Adding to 11542251225 its reverse (52215224511), we get a palindrome (63757475736).

The spelling of 11542251225 in words is "eleven billion, five hundred forty-two million, two hundred fifty-one thousand, two hundred twenty-five".