215725505527512 has 64 divisors (see below), whose sum is σ = 625291320384000. Its totient is φ = 68782045239072.

The previous prime is 215725505527487. The next prime is 215725505527517.

215725505527512 is a `hidden beast` number, since 2 + 1 + 5 + 7 + 2 + 5 + 5 + 0 + 552 + 75 + 12 = 666.

215725505527512 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×215725505527512² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215725505527517) 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 15 ways as a sum of consecutive naturals, for example, 21711499212 + ... + 21711509147.

It is an arithmetic number, because the mean of its divisors is an integer number (9770176881000).

Almost surely, 2^{215725505527512} is an apocalyptic number.

It is an amenable number.

215725505527512 is an abundant number, since it is smaller than the sum of its proper divisors (409565814856488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215725505527512 is a wasteful number, since it uses less digits than its factorization.

215725505527512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43423008397 (or 43423008387 counting only the distinct ones).

The product of its (nonzero) digits is 12250000, while the sum is 54.

The spelling of 215725505527512 in words is "two hundred fifteen trillion, seven hundred twenty-five billion, five hundred five million, five hundred twenty-seven thousand, five hundred twelve".