428186925245 has 8 divisors (see below), whose sum is σ = 513944585016. Its totient is φ = 342469357056.

The previous prime is 428186925209. The next prime is 428186925269. The reversal of 428186925245 is 542529681824.

It can be written as a sum of positive squares in 4 ways, for example, as 100681156 + 428086244089 = 10034^2 + 654283^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428186925245 - 2²⁰ = 428185876669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9999392 + ... + 10042121.

It is an arithmetic number, because the mean of its divisors is an integer number (64243073127).

Almost surely, 2^428186925245 is an apocalyptic number.

It is an amenable number.

428186925245 is a deficient number, since it is larger than the sum of its proper divisors (85757659771).

428186925245 is a wasteful number, since it uses less digits than its factorization.

428186925245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20045791.

The product of its digits is 11059200, while the sum is 56.

The spelling of 428186925245 in words is "four hundred twenty-eight billion, one hundred eighty-six million, nine hundred twenty-five thousand, two hundred forty-five".