425401240 has 64 divisors (see below), whose sum is σ = 1069679520. Its totient is φ = 150912000.

The previous prime is 425401237. The next prime is 425401259. The reversal of 425401240 is 42104524.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6250 + ... + 29830.

Almost surely, 2^425401240 is an apocalyptic number.

425401240 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 425401240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534839760).

425401240 is an abundant number, since it is smaller than the sum of its proper divisors (644278280).

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

425401240 is a wasteful number, since it uses less digits than its factorization.

425401240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23644 (or 23640 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 425401240 is about 20625.2573317280. The cubic root of 425401240 is about 752.0838285529.

Adding to 425401240 its reverse (42104524), we get a palindrome (467505764).

The spelling of 425401240 in words is "four hundred twenty-five million, four hundred one thousand, two hundred forty".