425665034688664 has 8 divisors (see below), whose sum is σ = 798121940041260. Its totient is φ = 212832517344328.

The previous prime is 425665034688653. The next prime is 425665034688671. The reversal of 425665034688664 is 466886430566524.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26604064668034 + ... + 26604064668049.

Almost surely, 2^{425665034688664} is an apocalyptic number.

It is an amenable number.

425665034688664 is a deficient number, since it is larger than the sum of its proper divisors (372456905352596).

425665034688664 is a wasteful number, since it uses less digits than its factorization.

425665034688664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53208129336089 (or 53208129336085 counting only the distinct ones).

The product of its (nonzero) digits is 4777574400, while the sum is 73.

The spelling of 425665034688664 in words is "four hundred twenty-five trillion, six hundred sixty-five billion, thirty-four million, six hundred eighty-eight thousand, six hundred sixty-four".