978873425 has 24 divisors (see below), whose sum is σ = 1251422880. Its totient is φ = 759196800.

The previous prime is 978873421. The next prime is 978873439. The reversal of 978873425 is 524378879.

It is not a de Polignac number, because 978873425 - 2² = 978873421 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (978873421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103130 + ... + 112220.

It is an arithmetic number, because the mean of its divisors is an integer number (52142620).

Almost surely, 2^978873425 is an apocalyptic number.

It is an amenable number.

978873425 is a deficient number, since it is larger than the sum of its proper divisors (272549455).

978873425 is a wasteful number, since it uses less digits than its factorization.

978873425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9233 (or 9228 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 978873425 is about 31286.9529516698. The cubic root of 978873425 is about 992.9076254766.

The spelling of 978873425 in words is "nine hundred seventy-eight million, eight hundred seventy-three thousand, four hundred twenty-five".