11155415125 has 8 divisors (see below), whose sum is σ = 13921958232. Its totient is φ = 8924332000.

The previous prime is 11155415093. The next prime is 11155415149. The reversal of 11155415125 is 52151455111.

It can be written as a sum of positive squares in 4 ways, for example, as 2164203441 + 8991211684 = 46521^2 + 94822^2 .

It is not a de Polignac number, because 11155415125 - 2⁵ = 11155415093 is a prime.

It is a super-2 number, since 2×11155415125² (a number of 21 digits) contains 22 as substring.

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, 44621536 + ... + 44621785.

It is an arithmetic number, because the mean of its divisors is an integer number (1740244779).

Almost surely, 2^11155415125 is an apocalyptic number.

It is an amenable number.

11155415125 is a deficient number, since it is larger than the sum of its proper divisors (2766543107).

11155415125 is an frugal number, since it uses more digits than its factorization.

11155415125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89243336 (or 89243326 counting only the distinct ones).

The product of its digits is 5000, while the sum is 31.

The spelling of 11155415125 in words is "eleven billion, one hundred fifty-five million, four hundred fifteen thousand, one hundred twenty-five".