11520204825 has 24 divisors (see below), whose sum is σ = 19307662048. Its totient is φ = 6059940480.

The previous prime is 11520204823. The next prime is 11520204859. The reversal of 11520204825 is 52840202511.

It is not a de Polignac number, because 11520204825 - 2¹ = 11520204823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11520204792 and 11520204801.

It is not an unprimeable number, because it can be changed into a prime (11520204823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1046599 + ... + 1057548.

Almost surely, 2^11520204825 is an apocalyptic number.

11520204825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11520204825 is a deficient number, since it is larger than the sum of its proper divisors (7787457223).

11520204825 is a wasteful number, since it uses less digits than its factorization.

11520204825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104233 (or 2104228 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 11520204825 in words is "eleven billion, five hundred twenty million, two hundred four thousand, eight hundred twenty-five".