478665627525 has 24 divisors (see below), whose sum is σ = 879326487360. Its totient is φ = 255288334320.

The previous prime is 478665627481. The next prime is 478665627553. The reversal of 478665627525 is 525726566874.

478665627525 is a `hidden beast` number, since 4 + 7 + 8 + 66 + 562 + 7 + 5 + 2 + 5 = 666.

It is not a de Polignac number, because 478665627525 - 2²² = 478661433221 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354566457 + ... + 354567806.

It is an arithmetic number, because the mean of its divisors is an integer number (36638603640).

Almost surely, 2^478665627525 is an apocalyptic number.

478665627525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

478665627525 is a deficient number, since it is larger than the sum of its proper divisors (400660859835).

478665627525 is a wasteful number, since it uses less digits than its factorization.

478665627525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709134282 (or 709134271 counting only the distinct ones).

The product of its digits is 169344000, while the sum is 63.

The spelling of 478665627525 in words is "four hundred seventy-eight billion, six hundred sixty-five million, six hundred twenty-seven thousand, five hundred twenty-five".