425684785 has 16 divisors (see below), whose sum is σ = 522086400. Its totient is φ = 333118656.

The previous prime is 425684773. The next prime is 425684789. The reversal of 425684785 is 587486524.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-425684785 is a prime.

It is not an unprimeable number, because it can be changed into a prime (425684789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38112 + ... + 47998.

It is an arithmetic number, because the mean of its divisors is an integer number (32630400).

Almost surely, 2^425684785 is an apocalyptic number.

It is an amenable number.

425684785 is a deficient number, since it is larger than the sum of its proper divisors (96401615).

425684785 is a wasteful number, since it uses less digits than its factorization.

425684785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10080.

The product of its digits is 2150400, while the sum is 49.

The square root of 425684785 is about 20632.1299191334. The cubic root of 425684785 is about 752.2508882816.

The spelling of 425684785 in words is "four hundred twenty-five million, six hundred eighty-four thousand, seven hundred eighty-five".