525420420278487 has 16 divisors (see below), whose sum is σ = 707057954148480. Its totient is φ = 347032221776352.

The previous prime is 525420420278477. The next prime is 525420420278491. The reversal of 525420420278487 is 784872024024525.

It is not a de Polignac number, because 525420420278487 - 2⁴ = 525420420278471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 525420420278487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (525420420278407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76512913 + ... + 83096730.

It is an arithmetic number, because the mean of its divisors is an integer number (44191122134280).

Almost surely, 2^{525420420278487} is an apocalyptic number.

525420420278487 is a deficient number, since it is larger than the sum of its proper divisors (181637533869993).

525420420278487 is a wasteful number, since it uses less digits than its factorization.

525420420278487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159619822.

The product of its (nonzero) digits is 80281600, while the sum is 60.

The spelling of 525420420278487 in words is "five hundred twenty-five trillion, four hundred twenty billion, four hundred twenty million, two hundred seventy-eight thousand, four hundred eighty-seven".