1200540525511 has 8 divisors (see below), whose sum is σ = 1203884059664. Its totient is φ = 1197197660160.

The previous prime is 1200540525491. The next prime is 1200540525517. The reversal of 1200540525511 is 1155250450021.

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

It is a cyclic number.

It is not a de Polignac number, because 1200540525511 - 2¹⁹ = 1200540001223 is a prime.

It is a super-2 number, since 2×1200540525511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200540525517) 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, 3542215 + ... + 3866311.

It is an arithmetic number, because the mean of its divisors is an integer number (150485507458).

Almost surely, 2^{1200540525511} is an apocalyptic number.

1200540525511 is a deficient number, since it is larger than the sum of its proper divisors (3343534153).

1200540525511 is an equidigital number, since it uses as much as digits as its factorization.

1200540525511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334401.

The product of its (nonzero) digits is 10000, while the sum is 31.

Adding to 1200540525511 its reverse (1155250450021), we get a palindrome (2355790975532).

The spelling of 1200540525511 in words is "one trillion, two hundred billion, five hundred forty million, five hundred twenty-five thousand, five hundred eleven".