978928925 has 48 divisors (see below), whose sum is σ = 1405743360. Its totient is φ = 670083840.

The previous prime is 978928919. The next prime is 978928939. The reversal of 978928925 is 529829879.

978928925 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 978928925 - 2⁶ = 978928861 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288539 + ... + 291911.

It is an arithmetic number, because the mean of its divisors is an integer number (29286320).

Almost surely, 2^978928925 is an apocalyptic number.

978928925 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

978928925 is a deficient number, since it is larger than the sum of its proper divisors (426814435).

978928925 is a wasteful number, since it uses less digits than its factorization.

978928925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462 (or 3457 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 59.

The square root of 978928925 is about 31287.8398902833. The cubic root of 978928925 is about 992.9263903582.

The spelling of 978928925 in words is "nine hundred seventy-eight million, nine hundred twenty-eight thousand, nine hundred twenty-five".