425644992 has 252 divisors, whose sum is σ = 1358706960. Its totient is φ = 127125504.

The previous prime is 425644957. The next prime is 425644993. The reversal of 425644992 is 299446524.

425644992 is a `hidden beast` number, since 42 + 564 + 49 + 9 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425644993) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4782484 + ... + 4782572.

Almost surely, 2^425644992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425644992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679353480).

425644992 is an abundant number, since it is smaller than the sum of its proper divisors (933061968).

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

425644992 is a wasteful number, since it uses less digits than its factorization.

425644992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 136 counting only the distinct ones).

The product of its digits is 622080, while the sum is 45.

The square root of 425644992 is about 20631.1655511752. The cubic root of 425644992 is about 752.2274474216.

The spelling of 425644992 in words is "four hundred twenty-five million, six hundred forty-four thousand, nine hundred ninety-two".