425617646885 has 16 divisors (see below), whose sum is σ = 511104006000. Its totient is φ = 340252340736.

The previous prime is 425617646869. The next prime is 425617646891. The reversal of 425617646885 is 588646716524.

It can be written as a sum of positive squares in 8 ways, for example, as 178170098404 + 247447548481 = 422102^2 + 497441^2 .

It is a cyclic number.

It is not a de Polignac number, because 425617646885 - 2⁴ = 425617646869 is a prime.

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, 70592051 + ... + 70598079.

It is an arithmetic number, because the mean of its divisors is an integer number (31944000375).

Almost surely, 2^425617646885 is an apocalyptic number.

It is an amenable number.

425617646885 is a deficient number, since it is larger than the sum of its proper divisors (85486359115).

425617646885 is a wasteful number, since it uses less digits than its factorization.

425617646885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13720.

The product of its digits is 77414400, while the sum is 62.

The spelling of 425617646885 in words is "four hundred twenty-five billion, six hundred seventeen million, six hundred forty-six thousand, eight hundred eighty-five".