425029440 has 168 divisors, whose sum is σ = 1483705440. Its totient is φ = 103009280.

The previous prime is 425029439. The next prime is 425029447. The reversal of 425029440 is 44920524.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 425029398 and 425029407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425029447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114331 + ... + 117989.

It is an arithmetic number, because the mean of its divisors is an integer number (8831580).

Almost surely, 2^425029440 is an apocalyptic number.

425029440 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 425029440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741852720).

425029440 is an abundant number, since it is smaller than the sum of its proper divisors (1058676000).

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

425029440 is a wasteful number, since it uses less digits than its factorization.

425029440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3701 (or 3680 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 425029440 is about 20616.2421406036. The cubic root of 425029440 is about 751.8646580032.

Adding to 425029440 its reverse (44920524), we get a palindrome (469949964).

The spelling of 425029440 in words is "four hundred twenty-five million, twenty-nine thousand, four hundred forty".