11525518001 has 2 divisors, whose sum is σ = 11525518002. Its totient is φ = 11525518000.

The previous prime is 11525517979. The next prime is 11525518003. The reversal of 11525518001 is 10081552511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9104976400 + 2420541601 = 95420^2 + 49199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11525518001 is a prime.

Together with 11525518003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11525518003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5762759000 + 5762759001.

It is an arithmetic number, because the mean of its divisors is an integer number (5762759001).

Almost surely, 2^11525518001 is an apocalyptic number.

It is an amenable number.

11525518001 is a deficient number, since it is larger than the sum of its proper divisors (1).

11525518001 is an equidigital number, since it uses as much as digits as its factorization.

11525518001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2000, while the sum is 29.

The spelling of 11525518001 in words is "eleven billion, five hundred twenty-five million, five hundred eighteen thousand, one".