978194750725 has 12 divisors (see below), whose sum is σ = 1214163664420. Its totient is φ = 781780204800.

The previous prime is 978194750711. The next prime is 978194750759. The reversal of 978194750725 is 527057491879.

978194750725 is digitally balanced in base 2, 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 6 ways, for example, as 87000221764 + 891194528961 = 294958^2 + 944031^2 .

It is not a de Polignac number, because 978194750725 - 2¹¹ = 978194748677 is a prime.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19364166 + ... + 19414615.

Almost surely, 2^978194750725 is an apocalyptic number.

It is an amenable number.

978194750725 is a deficient number, since it is larger than the sum of its proper divisors (235968913695).

978194750725 is a wasteful number, since it uses less digits than its factorization.

978194750725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38779800 (or 38779795 counting only the distinct ones).

The product of its (nonzero) digits is 44452800, while the sum is 64.

The spelling of 978194750725 in words is "nine hundred seventy-eight billion, one hundred ninety-four million, seven hundred fifty thousand, seven hundred twenty-five".