978836625 has 192 divisors, whose sum is σ = 2093285376. Its totient is φ = 435456000.

The previous prime is 978836587. The next prime is 978836627. The reversal of 978836625 is 526638879.

It is a happy number.

978836625 is a `hidden beast` number, since 9 + 7 + 8 + 8 + 3 + 6 + 625 = 666.

It is not a de Polignac number, because 978836625 - 2¹⁰ = 978835601 is a prime.

It is a super-2 number, since 2×978836625² = 1916242276882781250, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (978836627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 7707312 + ... + 7707438.

It is an arithmetic number, because the mean of its divisors is an integer number (10902528).

Almost surely, 2^978836625 is an apocalyptic number.

It is an amenable number.

978836625 is an abundant number, since it is smaller than the sum of its proper divisors (1114448751).

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

978836625 is a wasteful number, since it uses less digits than its factorization.

978836625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 196 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 978836625 is about 31286.3648415728. The cubic root of 978836625 is about 992.8951827857.

The spelling of 978836625 in words is "nine hundred seventy-eight million, eight hundred thirty-six thousand, six hundred twenty-five".