425145966 has 128 divisors (see below), whose sum is σ = 1049075712. Its totient is φ = 112320000.

The previous prime is 425145949. The next prime is 425145967. The reversal of 425145966 is 669541524.

425145966 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425145967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4209316 + ... + 4209416.

It is an arithmetic number, because the mean of its divisors is an integer number (8195904).

Almost surely, 2^425145966 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425145966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524537856).

425145966 is an abundant number, since it is smaller than the sum of its proper divisors (623929746).

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

425145966 is a wasteful number, since it uses less digits than its factorization.

425145966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

The product of its digits is 259200, while the sum is 42.

The square root of 425145966 is about 20619.0680196754. The cubic root of 425145966 is about 751.9333620878.

The spelling of 425145966 in words is "four hundred twenty-five million, one hundred forty-five thousand, nine hundred sixty-six".