115531963525 has 12 divisors (see below), whose sum is σ = 156283238304. Its totient is φ = 84023246000.

The previous prime is 115531963517. The next prime is 115531963531. The reversal of 115531963525 is 525369135511.

It is not a de Polignac number, because 115531963525 - 2³ = 115531963517 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 11 ways as a sum of consecutive naturals, for example, 210057841 + ... + 210058390.

It is an arithmetic number, because the mean of its divisors is an integer number (13023603192).

Almost surely, 2^115531963525 is an apocalyptic number.

It is an amenable number.

115531963525 is a deficient number, since it is larger than the sum of its proper divisors (40751274779).

115531963525 is a wasteful number, since it uses less digits than its factorization.

115531963525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420116252 (or 420116247 counting only the distinct ones).

The product of its digits is 607500, while the sum is 46.

It can be divided in two parts, 11553 and 1963525, that added together give a triangular number (1975078 = T₁₉₈₇).

The spelling of 115531963525 in words is "one hundred fifteen billion, five hundred thirty-one million, nine hundred sixty-three thousand, five hundred twenty-five".