428773925 has 12 divisors (see below), whose sum is σ = 532123680. Its totient is φ = 342732720.

The previous prime is 428773913. The next prime is 428773951. The reversal of 428773925 is 529377824.

It is a happy number.

It is not a de Polignac number, because 428773925 - 2⁶ = 428773861 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428773925.

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 11 ways as a sum of consecutive naturals, for example, 26474 + ... + 39476.

It is an arithmetic number, because the mean of its divisors is an integer number (44343640).

Almost surely, 2^428773925 is an apocalyptic number.

It is an amenable number.

428773925 is a deficient number, since it is larger than the sum of its proper divisors (103349755).

428773925 is a wasteful number, since it uses less digits than its factorization.

428773925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14332 (or 14327 counting only the distinct ones).

The product of its digits is 846720, while the sum is 47.

The square root of 428773925 is about 20706.8569560907. The cubic root of 428773925 is about 754.0661670598.

The spelling of 428773925 in words is "four hundred twenty-eight million, seven hundred seventy-three thousand, nine hundred twenty-five".