115225111533521 has 16 divisors (see below), whose sum is σ = 125900117053440. Its totient is φ = 104583571044480.

The previous prime is 115225111533473. The next prime is 115225111533601. The reversal of 115225111533521 is 125335111522511.

It is a de Polignac number, because none of the positive numbers 2^k-115225111533521 is a prime.

It is a super-3 number, since 3×115225111533521³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115225111533121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14092925 + ... + 20713781.

It is an arithmetic number, because the mean of its divisors is an integer number (7868757315840).

Almost surely, 2^{115225111533521} is an apocalyptic number.

115225111533521 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115225111533521 is a deficient number, since it is larger than the sum of its proper divisors (10675005519919).

115225111533521 is a wasteful number, since it uses less digits than its factorization.

115225111533521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623384.

The product of its digits is 45000, while the sum is 38.

The spelling of 115225111533521 in words is "one hundred fifteen trillion, two hundred twenty-five billion, one hundred eleven million, five hundred thirty-three thousand, five hundred twenty-one".