115525310021 has 8 divisors (see below), whose sum is σ = 126033840000. Its totient is φ = 105017818240.

The previous prime is 115525310003. The next prime is 115525310059. The reversal of 115525310021 is 120013525511.

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 115525310021 - 2¹⁸ = 115525047877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115525310071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17021 + ... + 480978.

It is an arithmetic number, because the mean of its divisors is an integer number (15754230000).

Almost surely, 2^115525310021 is an apocalyptic number.

115525310021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

115525310021 is a deficient number, since it is larger than the sum of its proper divisors (10508529979).

115525310021 is a wasteful number, since it uses less digits than its factorization.

115525310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519099.

The product of its (nonzero) digits is 1500, while the sum is 26.

Adding to 115525310021 its reverse (120013525511), we get a palindrome (235538835532).

The spelling of 115525310021 in words is "one hundred fifteen billion, five hundred twenty-five million, three hundred ten thousand, twenty-one".