78052575825 has 36 divisors (see below), whose sum is σ = 159772387008. Its totient is φ = 35681176800.

The previous prime is 78052575781. The next prime is 78052575827. The reversal of 78052575825 is 52857525087.

78052575825 is a `hidden beast` number, since 7 + 8 + 0 + 5 + 2 + 57 + 582 + 5 = 666.

It is not a de Polignac number, because 78052575825 - 2⁶ = 78052575761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78052575827) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 24777021 + ... + 24780170.

Almost surely, 2^78052575825 is an apocalyptic number.

78052575825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

78052575825 is an abundant number, since it is smaller than the sum of its proper divisors (81719811183).

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

78052575825 is a wasteful number, since it uses less digits than its factorization.

78052575825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49557214 (or 49557206 counting only the distinct ones).

The product of its (nonzero) digits is 7840000, while the sum is 54.

The spelling of 78052575825 in words is "seventy-eight billion, fifty-two million, five hundred seventy-five thousand, eight hundred twenty-five".