7901678525 has 24 divisors (see below), whose sum is σ = 10575067944. Its totient is φ = 5822208000.

The previous prime is 7901678461. The next prime is 7901678549. The reversal of 7901678525 is 5258761097.

7901678525 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1051964356 + 6849714169 = 32434^2 + 82763^2 .

It is not a de Polignac number, because 7901678525 - 2⁶ = 7901678461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121925 + ... + 175125.

It is an arithmetic number, because the mean of its divisors is an integer number (440627831).

Almost surely, 2^7901678525 is an apocalyptic number.

It is an amenable number.

7901678525 is a deficient number, since it is larger than the sum of its proper divisors (2673389419).

7901678525 is a wasteful number, since it uses less digits than its factorization.

7901678525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53681 (or 53676 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 50.

The square root of 7901678525 is about 88891.3861124912. The cubic root of 7901678525 is about 1991.7727463053.

The spelling of 7901678525 in words is "seven billion, nine hundred one million, six hundred seventy-eight thousand, five hundred twenty-five".