11511225365 has 8 divisors (see below), whose sum is σ = 13814276568. Its totient is φ = 9208442880.

The previous prime is 11511225359. The next prime is 11511225409. The reversal of 11511225365 is 56352211511.

It can be written as a sum of positive squares in 4 ways, for example, as 3718926289 + 7792299076 = 60983^2 + 88274^2 .

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

It is not a de Polignac number, because 11511225365 - 2⁶ = 11511225301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43709 + ... + 157901.

It is an arithmetic number, because the mean of its divisors is an integer number (1726784571).

Almost surely, 2^11511225365 is an apocalyptic number.

It is an amenable number.

11511225365 is a deficient number, since it is larger than the sum of its proper divisors (2303051203).

11511225365 is a wasteful number, since it uses less digits than its factorization.

11511225365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134359.

The product of its digits is 9000, while the sum is 32.

Adding to 11511225365 its reverse (56352211511), we get a palindrome (67863436876).

The spelling of 11511225365 in words is "eleven billion, five hundred eleven million, two hundred twenty-five thousand, three hundred sixty-five".