11525520535665 has 8 divisors (see below), whose sum is σ = 18440832857088. Its totient is φ = 6146944285680.

The previous prime is 11525520535637. The next prime is 11525520535667. The reversal of 11525520535665 is 56653502552511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11525520535665 - 2¹⁵ = 11525520502897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11525520535667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384184017841 + ... + 384184017870.

It is an arithmetic number, because the mean of its divisors is an integer number (2305104107136).

Almost surely, 2^{11525520535665} is an apocalyptic number.

11525520535665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11525520535665 is a deficient number, since it is larger than the sum of its proper divisors (6915312321423).

11525520535665 is an equidigital number, since it uses as much as digits as its factorization.

11525520535665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768368035719.

The product of its (nonzero) digits is 6750000, while the sum is 51.

The spelling of 11525520535665 in words is "eleven trillion, five hundred twenty-five billion, five hundred twenty million, five hundred thirty-five thousand, six hundred sixty-five".