78525512 has 36 divisors (see below), whose sum is σ = 160096635. Its totient is φ = 36092160.

The previous prime is 78525493. The next prime is 78525521. The reversal of 78525512 is 21552587.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 29441476 + 49084036 = 5426^2 + 7006^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6266.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 325712 + ... + 325952.

Almost surely, 2^78525512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78525512

78525512 is an abundant number, since it is smaller than the sum of its proper divisors (81571123).

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

78525512 is a wasteful number, since it uses less digits than its factorization.

78525512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 514 (or 256 counting only the distinct ones).

The product of its digits is 28000, while the sum is 35.

The square root of 78525512 is about 8861.4621818298. The cubic root of 78525512 is about 428.2232654685.

The spelling of 78525512 in words is "seventy-eight million, five hundred twenty-five thousand, five hundred twelve".