425032240 has 80 divisors (see below), whose sum is σ = 1023122016. Its totient is φ = 164096000.

The previous prime is 425032229. The next prime is 425032247. The reversal of 425032240 is 42230524.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (425032247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 330639 + ... + 331921.

Almost surely, 2^425032240 is an apocalyptic number.

425032240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 425032240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (511561008).

425032240 is an abundant number, since it is smaller than the sum of its proper divisors (598089776).

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

425032240 is a wasteful number, since it uses less digits than its factorization.

425032240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1432 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 425032240 is about 20616.3100481148. The cubic root of 425032240 is about 751.8663090389.

Adding to 425032240 its reverse (42230524), we get a palindrome (467262764).

The spelling of 425032240 in words is "four hundred twenty-five million, thirty-two thousand, two hundred forty".