20415465305125 has 64 divisors (see below), whose sum is σ = 27900650988288. Its totient is φ = 14791057920000.

The previous prime is 20415465305099. The next prime is 20415465305141. The reversal of 20415465305125 is 52150356451402.

It is a de Polignac number, because none of the positive numbers 2^k-20415465305125 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2708695357 + ... + 2708702893.

It is an arithmetic number, because the mean of its divisors is an integer number (435947671692).

Almost surely, 2^{20415465305125} is an apocalyptic number.

20415465305125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20415465305125 is a deficient number, since it is larger than the sum of its proper divisors (7485185683163).

20415465305125 is a wasteful number, since it uses less digits than its factorization.

20415465305125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14807 (or 14797 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The spelling of 20415465305125 in words is "twenty trillion, four hundred fifteen billion, four hundred sixty-five million, three hundred five thousand, one hundred twenty-five".