425321664 has 28 divisors (see below), whose sum is σ = 1125330744. Its totient is φ = 141773824.

The previous prime is 425321653. The next prime is 425321671. The reversal of 425321664 is 466123524.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1107417 + ... + 1107800.

Almost surely, 2^425321664 is an apocalyptic number.

It is an amenable number.

425321664 is an abundant number, since it is smaller than the sum of its proper divisors (700009080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

425321664 is a wasteful number, since it uses less digits than its factorization.

425321664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2215232 (or 2215222 counting only the distinct ones).

The product of its digits is 34560, while the sum is 33.

The square root of 425321664 is about 20623.3281504223. The cubic root of 425321664 is about 752.0369304332.

The spelling of 425321664 in words is "four hundred twenty-five million, three hundred twenty-one thousand, six hundred sixty-four".