425220678 has 40 divisors (see below), whose sum is σ = 985675680. Its totient is φ = 136851120.

The previous prime is 425220667. The next prime is 425220683. The reversal of 425220678 is 876022524.

425220678 is a `hidden beast` number, since 425 + 220 + 6 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 40558 + ... + 49953.

It is an arithmetic number, because the mean of its divisors is an integer number (24641892).

Almost surely, 2^425220678 is an apocalyptic number.

425220678 is an abundant number, since it is smaller than the sum of its proper divisors (560455002).

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

425220678 is a wasteful number, since it uses less digits than its factorization.

425220678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90554 (or 90545 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 425220678 is about 20620.8796611590. The cubic root of 425220678 is about 751.9774059060.

The spelling of 425220678 in words is "four hundred twenty-five million, two hundred twenty thousand, six hundred seventy-eight".