425889664 has 32 divisors (see below), whose sum is σ = 849957840. Its totient is φ = 212567040.

The previous prime is 425889649. The next prime is 425889713. The reversal of 425889664 is 466988524.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78132 + ... + 83404.

Almost surely, 2^425889664 is an apocalyptic number.

It is an amenable number.

425889664 is a deficient number, since it is larger than the sum of its proper divisors (424068176).

425889664 is an equidigital number, since it uses as much as digits as its factorization.

425889664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5918 (or 5906 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The square root of 425889664 is about 20637.0943691209. The cubic root of 425889664 is about 752.3715532244.

The spelling of 425889664 in words is "four hundred twenty-five million, eight hundred eighty-nine thousand, six hundred sixty-four".