425431812 has 144 divisors (see below), whose sum is σ = 1156384320. Its totient is φ = 121305600.

The previous prime is 425431807. The next prime is 425431813. The reversal of 425431812 is 218134524.

It is a super-4 number, since 4×425431812⁴ (a number of 36 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 425431812.

It is not an unprimeable number, because it can be changed into a prime (425431813) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 2350362 + ... + 2350542.

Almost surely, 2^425431812 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 425431812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578192160).

425431812 is an abundant number, since it is smaller than the sum of its proper divisors (730952508).

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

425431812 is a wasteful number, since it uses less digits than its factorization.

425431812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 279 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 425431812 is about 20625.9984485600. The cubic root of 425431812 is about 752.1018446076.

The spelling of 425431812 in words is "four hundred twenty-five million, four hundred thirty-one thousand, eight hundred twelve".