4352121105525 has 48 divisors (see below), whose sum is σ = 7998428692800. Its totient is φ = 2320138054080.

The previous prime is 4352121105523. The next prime is 4352121105529. The reversal of 4352121105525 is 5255011212534.

4352121105525 is a `hidden beast` number, since 4 + 3 + 5 + 2 + 1 + 21 + 105 + 525 = 666.

It is not a de Polignac number, because 4352121105525 - 2¹ = 4352121105523 is a prime.

It is a super-2 number, since 2×4352121105525² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4352121105525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4352121105523) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200547 + ... + 2957103.

It is an arithmetic number, because the mean of its divisors is an integer number (166633931100).

Almost surely, 2^{4352121105525} is an apocalyptic number.

4352121105525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4352121105525 is a deficient number, since it is larger than the sum of its proper divisors (3646307587275).

4352121105525 is a wasteful number, since it uses less digits than its factorization.

4352121105525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758915 (or 2758904 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The spelling of 4352121105525 in words is "four trillion, three hundred fifty-two billion, one hundred twenty-one million, one hundred five thousand, five hundred twenty-five".