425388685 has 16 divisors (see below), whose sum is σ = 520024752. Its totient is φ = 333964800.

The previous prime is 425388679. The next prime is 425388709. The reversal of 425388685 is 586883524.

It can be written as a sum of positive squares in 8 ways, for example, as 222069604 + 203319081 = 14902^2 + 14259^2 .

It is not a de Polignac number, because 425388685 - 2¹⁹ = 424864397 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 15 ways as a sum of consecutive naturals, for example, 157567 + ... + 160243.

It is an arithmetic number, because the mean of its divisors is an integer number (32501547).

Almost surely, 2^425388685 is an apocalyptic number.

It is an amenable number.

425388685 is a deficient number, since it is larger than the sum of its proper divisors (94636067).

425388685 is a wasteful number, since it uses less digits than its factorization.

425388685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3264.

The product of its digits is 1843200, while the sum is 49.

The square root of 425388685 is about 20624.9529696433. The cubic root of 425388685 is about 752.0764296516.

The spelling of 425388685 in words is "four hundred twenty-five million, three hundred eighty-eight thousand, six hundred eighty-five".