11215015125 has 16 divisors (see below), whose sum is σ = 18661785792. Its totient is φ = 5981341200.

The previous prime is 11215015067. The next prime is 11215015139. The reversal of 11215015125 is 52151051211.

It is not a de Polignac number, because 11215015125 - 2⁶ = 11215015061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11215015095 and 11215015104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14952979 + ... + 14953728.

It is an arithmetic number, because the mean of its divisors is an integer number (1166361612).

Almost surely, 2^11215015125 is an apocalyptic number.

11215015125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11215015125 is a deficient number, since it is larger than the sum of its proper divisors (7446770667).

11215015125 is an equidigital number, since it uses as much as digits as its factorization.

11215015125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29906725 (or 29906715 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 24.

Adding to 11215015125 its reverse (52151051211), we get a palindrome (63366066336).

The spelling of 11215015125 in words is "eleven billion, two hundred fifteen million, fifteen thousand, one hundred twenty-five".